Add SQLite function `json_pretty` #4793

Job	Run time
Compiletests	1m 19s
Check rustfmt style && run clippy	5m 1s
Check mysql bundled + Mysql with asan	19m 45s
Check postgres bundled + Postgres with asan	9m 14s
Check sqlite bundled + Sqlite with asan	4m 38s
Check Minimal supported rust version (1.78.0)	1m 32s
Check	0s
	41m 29s

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