tracking: postgres-compatible number to_char function

[forsaken628]

Summary
#16480
https://www.postgresql.org/docs/current/functions-formatting.html

• Data type: int8, int16, int32, int64 feat(query): Initial implementation of postgres-compatible number to_char function #16507
• Data type: float, double feat(query): Initial implementation of postgres-compatible number to_char function #16507
• Data type: decimal32, decimal64
• Reuse parsed FormatNode
• Pattern: 9/0/./,/PR/MI/PL/SG/EEEE/literal feat(query): Initial implementation of postgres-compatible number to_char function #16507
• Pattern: S sign anchored to number (uses locale)
• Pattern: L currency symbol (uses locale)
• Pattern: D decimal point (uses locale)
• Pattern: G group separator (uses locale)
• Pattern: RN Roman numeral (input between 1 and 3999)
• Pattern: TH or th ordinal number suffix
• Pattern: V shift specified number of digits
• more test
• doc

[AtlasPilotPuppy]

I would like to take this isue.