Implement goto for enum literals

[BlankTiger]

Implementation handles following goto scenarios for enum literals:

• procedure calls: SDL_CreateGPUDevice(.SPIRV | .MSL | .DXIL, ...)
• struct field defaults/declarations: se: Some_Enum = .A
• variable assignments: flags = .SPIRV | .MSL and ident.parent.kind = .UNARY_OPERATION
• comparison operations: value == .SOME_ENUM and value != .OTHER_ENUM

[SogoCZE]

Thank you. I will try to review this PR soon.