feat: impl table_constraints table for information_schema #14978

Job	Run time
Spell Check with Typos	27s
Toml Check	2m 49s
Build GreptimeDB binaries (ubuntu-20.04)	12m 8s
Check (windows-latest)	13m 45s
Clippy	8m 43s
Check (ubuntu-20.04)	8m 40s
coverage	11m 42s
Rustfmt	1m 10s
Compatibility Test	40s
Sqlness Test (ubuntu-20.04)	2m 57s
Sqlness Test with Kafka Wal (ubuntu-20.04)	2m 52s
Fuzz Test (fuzz_create_table)	4m 42s
Fuzz Test (fuzz_alter_table)	4m 27s
Fuzz Test (fuzz_create_database)	4m 29s
	1h 19m 31s

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