feat(tql): add initial support for start,stop,step as sql functions #14576

Job	Run time
Clippy	9m 7s
coverage	16m 31s
Build GreptimeDB binaries (ubuntu-20.04)	12m 17s
Check (windows-latest)	13m 12s
Rustfmt	1m 7s
Check (ubuntu-20.04)	8m 39s
Toml Check	3m 11s
Spell Check with Typos	29s
Sqlness Test with Kafka Wal (ubuntu-20.04)	2m 22s
Sqlness Test (ubuntu-20.04)	1m 50s
Fuzz Test (fuzz_create_table)	4m 54s
Compatibility Test	55s
Fuzz Test (fuzz_alter_table)	5m 24s
	1h 19m 58s

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