Docs directory restructure: Second batch

[symbolpunk]

This PR contains the second batch of docs file relocations. Context and process notes are available here.

This batch completes the Build decentralized apps section:

| Document Number | Before location                                                                | After location (to match sidebar structure)                                   | Redirects  | Page Links   |
| --------------- | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | ---------- | ------------ |
| 1               | /for-devs/concepts/differences-between-arbitrum-ethereum/overview               | /build-decentralized-apps/arbitrum-vs-ethereum/comparison-overview           | ✅         | ✅          |
| 2               | /for-devs/concepts/differences-between-arbitrum-ethereum/block-numbers-and-time | /build-decentralized-apps/arbitrum-vs-ethereum/block-numbers-and-time        | ✅         | ✅          |
| 3               | /for-devs/concepts/differences-between-arbitrum-ethereum/rpc-methods            | /build-decentralized-apps/arbitrum-vs-ethereum/rpc-methods                   | ✅         | ✅          |
| 4               | /for-devs/concepts/differences-between-arbitrum-ethereum/solidity-support       | /build-decentralized-apps/arbitrum-vs-ethereum/solidity-support              | ✅         | ✅          |
| 5               | /for-devs/concepts/oracles                                                      | /build-decentralized-apps/oracles/overview                                   | ✅         | ✅          |
| 6               | /devs-how-tos/how-to-use-oracles                                                | /build-decentralized-apps/oracles/how-to-use-oracles                         | ✅         | ✅          |
| 7               | /for-devs/dev-tools-and-resources/oracles                                       | /build-decentralized-apps/oracles/reference                                  | ✅         | ✅          |
| 8               | /for-devs/concepts/precompiles                                                  | /build-decentralized-apps/precompiles/overview                               | ✅         | ✅          |
| 9               | /for-devs/dev-tools-and-resources/precompiles                                   | /build-decentralized-apps/precompiles/reference                              | ✅         | ✅          |
| 10              | /for-devs/concepts/nodeinterface                                                | /build-decentralized-apps/nodeinterface/overview                             | ✅         | ✅          |
| 11              | /for-devs/dev-tools-and-resources/nodeinterface                                 | /build-decentralized-apps/nodeinterface/reference                            | ✅         | ✅          |
| 12              | /for-devs/concepts/token-bridge/token-bridge-overview                           | /build-decentralized-apps/token-bridging/overview                            | ✅         | ✅          |
| 13              | /devs-how-tos/bridge-tokens/how-to-bridge-tokens-overview                       | /build-decentralized-apps/token-bridging/get-started                         | ✅         | ✅          |
| 14              | /devs-how-tos/bridge-tokens/how-to-bridge-tokens-standard                       | /build-decentralized-apps/token-bridging/how-to-bridge-tokens-standard       | ✅         | ✅          |
| 15              | /devs-how-tos/bridge-tokens/how-to-bridge-tokens-generic-custom                 | /build-decentralized-apps/token-bridging/how-to-bridge-tokens-generic-custom | ✅         | ✅          |
| 16              | /devs-how-tos/bridge-tokens/how-to-bridge-tokens-custom-gateway                 | /build-decentralized-apps/token-bridging/how-to-bridge-tokens-custom-gateway | ✅         | ✅          |
| 17              | /for-devs/concepts/token-bridge/token-bridge-ether                              | /build-decentralized-apps/token-bridging/token-bridge-ether                  | ✅         | ✅          |
| 18              | /for-devs/concepts/token-bridge/token-bridge-erc20                              | /build-decentralized-apps/token-bridging/token-bridge-erc20                  | ✅         | ✅          |
| 19              | /node-running/node-providers                                                    | /build-decentralized-apps/reference/node-providers                           | ✅         | ✅          |
| 20              | /for-devs/useful-addresses                                                      | /build-decentralized-apps/reference/useful-addresses                         | ✅         | ✅          |
| 21              | /for-devs/chain-params                                                          | /build-decentralized-apps/reference/chain-params                             | ✅         | ✅          |
| 22              | /for-devs/dev-tools-and-resources/development-frameworks                        | /build-decentralized-apps/reference/development-frameworks                   | ✅         | ✅          |
| 23              | /for-devs/dev-tools-and-resources/web3-libraries-tools                          | /build-decentralized-apps/reference/web3-libraries-tools                     | ✅         | ✅          |
| 24              | /for-devs/dev-tools-and-resources/monitoring-tools-block-explorers              | /build-decentralized-apps/reference/monitoring-tools-block-explorers         | ✅         | ✅          |
| 25              | /for-devs/dev-tools-and-resources/debugging-tools                               | /build-decentralized-apps/reference/debugging-tools                          | ✅         | ✅          |
| 26              | /mainnet-risks                                                                  | /build-decentralized-apps/reference/mainnet-risks                            | ✅         | ✅          |

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Name	Status	Preview	Updated (UTC)
arbitrum-docs	✅ Ready (Inspect)	Visit Preview	Mar 22, 2024 3:11pm

[mahsamoosavi]

These link moves are great! They really tidy things up and make it easier to find contents!🔥