Bug 1632127 - Use code generation for WarpCacheIRTranspiler. r=evilpie

Adds a 'transpile' argument to each op and if true generate transpiler boilerplate.

The transpiler methods are now called emitFoo for consistency with CacheIRCompiler.

Differential Revision: https://phabricator.services.mozilla.com/D71942

UltraBlame original commit: 773d417f5767029db51a4259ea0078174be0469d

Author: marco-c