feat: implement drop flow procedure #15877

Job	Run time
Toml Check	43s
Check typos and docs	7s
Check (windows-latest)	6m 7s
Check (ubuntu-20.04)	1m 50s
Check License Header	1m 18s
Clippy	3m 11s
Build GreptimeDB binaries (ubuntu-20.04)	4m 8s
coverage	12m 26s
Rustfmt	24s
Sqlness Test with Kafka Wal (ubuntu-20.04)	2m 51s
Sqlness Test (ubuntu-20.04)	2m 36s
Fuzz Test (fuzz_create_table)	4m 21s
Unstable Fuzz Test (unstable_fuzz_create_table_standalone)	13m 8s
Fuzz Test (fuzz_alter_table)	4m 51s
Fuzz Test (fuzz_create_database)	4m 48s
Fuzz Test (fuzz_create_logical_table)	4m 20s
Fuzz Test (fuzz_alter_logical_table)	4m 53s
Fuzz Test (fuzz_insert)	4m 24s
Fuzz Test (fuzz_insert_logical_table)	4m 31s
	1h 20m 57s

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