Migrate to MkDocs #2647

Job	Run time
test_flutter (3.22)	2m 3s
test_flutter (3.24)	2m 0s
setup / Get and cache Dart dependencies	31s
setup / Compile sqlite3 for tests (ubuntu-latest)	6s
setup / Compile sqlite3 for tests (macos-latest)	10s
setup / Compile sqlite3 for tests (windows-latest)	12s
Documentation	4m 51s
drift_dev	5m 56s
sqlparser	43s
drift package	2m 2s
Integration tests for migration tooling	1m 10s
Integration tests	2m 56s
Web integration tests	4m 7s
drift_web_ddc	3m 26s
Drift web unit tests, dart2wasm, chrome	3m 27s
Drift web unit tests, dart2wasm, firefox	3m 57s
	37m 37s

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