🚀 [Feature]: Support core-schema integer and float forms (octal, hex, `.inf`, `.nan`)

[MariusStorhaug]

YAML 1.2.2 core schema recognises integer and float forms beyond plain base-10. The current parser only resolves base-10 ints and standard floats.

Request

Recognise the full core schema scalar resolution regex set:

Pattern	Type
0o [0-7]+	int (octal)
0x [0-9a-fA-F]+	int (hex)
[-+]? \.inf / \.Inf / \.INF	float (infinity)
\.nan / \.NaN / \.NAN	float (NaN)

ConvertTo-Yaml should round-trip:

• [double]::PositiveInfinity → .inf
• [double]::NegativeInfinity → -.inf
• [double]::NaN → .nan

Integers should emit as base-10 (the canonical form per the spec).

Spec examples covered

• Example 2.19 — Integers
• Example 2.20 — Floating Point