ci: add fuzz_insert ci cfg #15625

Job	Run time
Check (windows-latest)	6m 52s
Build GreptimeDB binaries (ubuntu-20.04)	4m 18s
Check (ubuntu-20.04)	1m 51s
Check typos and docs	18s
Toml Check	35s
Clippy	2m 29s
coverage	14m 37s
Rustfmt	34s
Sqlness Test with Kafka Wal (ubuntu-20.04)	3m 2s
Sqlness Test (ubuntu-20.04)	2m 18s
Fuzz Test (fuzz_create_table)	4m 53s
Fuzz Test (fuzz_alter_table)	4m 41s
Fuzz Test (fuzz_create_database)	4m 29s
Fuzz Test (fuzz_create_logical_table)	4m 47s
Fuzz Test (fuzz_alter_logical_table)	4m 49s
Fuzz Test (fuzz_insert)	5m 0s
	1h 5m 33s

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