fix: rename statemint/statemine/westmint to asset-hub-polkadot/kusama/westend

[Imod7]

Changes

Following the changes made in the Cumulus PR Rename Statemint to Asset Hub #2633, the following renamings were made in Sidecar :

• statemint -> asset-hub-polkadot or assetHubPolkadot depending on the instance
• statemine -> asset-hub-kusama or assetHubKusama depending on the instance
• westmint -> asset-hub-westend

Exceptions

No renamings were made in :

1. the URL endpoint wsUrl: 'wss://statemine-rpc.polkadot.io' of the config.ts file
2. the URL endpoint wsUrl: 'wss://statemint-rpc.polkadot.io' of the config.ts file
3. the specName mentioned in 340000.json file
4. the specName mentioned in 993450.json file

The above was also not changed in the PR.

Important Note

Failed to rename this line

rococoRegistry.createType('Bytes', 'statemint'),

because I get the following error when yarn test

c/services/pallets/PalletsAssetsService.spec.ts
  ● PalletsAssetsService › PalletsAssetsService.fetchAssetById › Should return the correct response for an AssetId

    expect(received).toStrictEqual(expected) // deep equality

    - Expected  - 1
    + Received  + 1

    @@ -15,11 +15,11 @@
        },
        "assetMetaData": Object {
          "decimals": "10",
          "deposit": "2000000",
          "isFrozen": false,
    -     "name": "0x73746174656d696e74",
    +     "name": "0x6173736574487562506f6c6b61646f74",