[RFC]: add `constants/float32/gamma-lanczos-g`

[Neerajpathak07]

Description

This RFC proposes

• To add constants/float32/gamma-lanczos-g to expand the scope for float32 operations.

var bool = ( FLOAT32_GAMMA_LANCZOS_G === 10.900510787963867 );
// returns true

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• The issue name begins with RFC:.