Timothee Guerin ce9c567e5b Improve TM language for enums, unions and escaped identifiers (#3069) ... resolves https://github.com/microsoft/typespec/issues/3070 The tm language wasn't correctly defining the syntax for escaped identifiers ``` `North West` ``` Enums and unions syntax was also not very accurate and didn't tokenize everything correctly ## Example of issue before  ## After 		2024-03-27 10:12:29 -07:00
..
typespec.json	Improve TM language for enums, unions and escaped identifiers (#3069)	2024-03-27 10:12:29 -07:00