Sliding sync: Split up handler into its own module #2777

Job	Run time
check-lockfile	12s
check-lockfile	12s
lint-crlf	2s
lint-crlf	2s
changes	3s
changes	3s
lint-newsfile	32s
lint-newsfile	32s
check-schema-delta	39s
check-schema-delta	39s
check-sampleconfig	55s
check-sampleconfig	55s
lint	45s
lint	45s
lint-clippy	0s
lint-clippy	0s
Typechecking	1m 25s
Typechecking	1m 25s
lint-pydantic	49s
lint-pydantic	49s
lint-clippy-nightly	0s
lint-clippy-nightly	0s
lint-readme	0s
lint-readme	0s
lint-rustfmt	0s
lint-rustfmt	0s
linting-done	3s
linting-done	3s
calculate-test-jobs	6s
calculate-test-jobs	6s
trial-olddeps	7m 47s
trial-olddeps	7m 47s
portdb (3.8, 11)	2m 57s
portdb (3.8, 11)	2m 57s
complement (monolith, SQLite)	12m 53s
complement (monolith, SQLite)	12m 53s
portdb (3.11, 15)	3m 39s
portdb (3.11, 15)	3m 39s
complement (monolith, Postgres)	13m 18s
complement (monolith, Postgres)	13m 18s
complement (workers, Postgres)	21m 25s
complement (workers, Postgres)	21m 25s
trial-pypy	0s
trial-pypy	0s
cargo-test	0s
cargo-test	0s
cargo-bench	0s
cargo-bench	0s
trial (3.8, sqlite, all)	5m 0s
trial (3.8, sqlite, all)	5m 0s
sytest (focal)	8m 18s
sytest (focal)	8m 18s
trial (3.8, postgres, 11, all)	12m 5s
trial (3.8, postgres, 11, all)	12m 5s
trial (3.8, sqlite)	6m 22s
trial (3.8, sqlite)	6m 22s
sytest (focal, postgres)	10m 23s
sytest (focal, postgres)	10m 23s
sytest (focal, multi-postgres, workers)	23m 22s
sytest (focal, multi-postgres, workers)	13m 10s
sytest (focal, multi-postgres, workers, asyncio)	19m 18s
sytest (focal, multi-postgres, workers, asyncio)	19m 18s
export-data	2m 5s
export-data	2m 5s
tests-done	2s
tests-done	2s
	4h 58m 38s

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