refactor: make the command entry cleaner #16381

Job	Run time
Check typos and docs	10s
Build GreptimeDB binaries (ubuntu-20.04)	4m 18s
Check (windows-2022)	4m 58s
Clippy	3m 19s
Check (ubuntu-20.04)	1m 35s
Rustfmt	32s
Check License Header	1m 13s
Toml Check	26s
coverage	13m 20s
Sqlness Test with Kafka Wal (ubuntu-20.04)	3m 4s
Unstable Fuzz Test (unstable_fuzz_create_table_standalone)	13m 6s
Sqlness Test (ubuntu-20.04)	2m 52s
Fuzz Test (fuzz_create_table)	4m 43s
Fuzz Test (fuzz_alter_table)	4m 49s
Fuzz Test (fuzz_create_database)	5m 19s
Fuzz Test (fuzz_create_logical_table)	6m 36s
Fuzz Test (fuzz_alter_logical_table)	4m 45s
Fuzz Test (fuzz_insert)	5m 28s
Fuzz Test (fuzz_insert_logical_table)	4m 54s
	1h 25m 27s

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