feat: add --environment flag to sqlmesh janitor for scoped cleanup (#… #3695

Job	Run time
test-dbt-versions (1.10)	1m 42s
test-dbt-versions (1.6)	1m 42s
test-dbt-versions (1.8)	1m 53s
test-dbt-versions (1.9)	1m 40s
test-dbt-versions (1.4)	1m 27s
changes	7s
test-dbt-versions (1.3)	1m 32s
test-dbt-versions (1.7)	1m 49s
test-dbt-versions (1.5)	1m 39s
test-vscode	0s
test-vscode-e2e	0s
ui-test	1m 25s
cicd-tests-windows	10m 30s
migration-test	1m 42s
engine-tests-docker (spark)	6m 13s
doc-tests	36s
engine-tests-docker (duckdb)	1m 32s
engine-tests-docker (trino)	9m 54s
style-and-cicd-tests (3.9)	24m 33s
style-and-cicd-tests (3.10)	23m 18s
engine-tests-docker (mssql)	1m 47s
style-and-cicd-tests (3.11)	22m 21s
engine-tests-docker (postgres)	2m 33s
style-and-cicd-tests (3.13)	15m 6s
engine-tests-docker (clickhouse)	2m 49s
engine-tests-docker (risingwave)	2m 46s
engine-tests-docker (mysql)	1m 40s
style-and-cicd-tests (3.12)	23m 10s
ui-style	-1s
engine-tests-cloud (redshift)	6m 19s
engine-tests-cloud (snowflake)	9m 9s
engine-tests-cloud (gcp-postgres)	4m 25s
engine-tests-cloud (clickhouse-cloud)	13m 37s
engine-tests-cloud (databricks)	12m 51s
engine-tests-cloud (bigquery)	16m 41s
engine-tests-cloud (fabric)	5m 32s
engine-tests-cloud (athena)	21m 14s
	4h 15m 13s

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