Create header mode to enable eliding function / method bodies#5516

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aviroop-123 wants to merge 7 commits intoJetBrains:masterfrom

aviroop-123:header-compilation-1

Commits on Oct 1, 2025

Create compiler arguments and configurations for enabling header mode.
aviroop-123
committed

Commits on Oct 4, 2025

Pass header compilation configuration to LightTree -> Fir declaration and expression builders across all compilers.
aviroop-123
committed