[FEATURE REQ] Support TypeSpec code generation for v2 libraries in CI

[vcolin7]

Is your feature request related to a problem? Please describe.

Currently, we don't support generating v2 libraries in CI because of 2 things:

• The latest publicly available version of TypeSpec does not support the azurev2 flavor
• TSP configuration between v1 and v2 libraries is different from one another and we don't currently have a way to tell the code generator to pick a specific file (it defaults to client.tsp).

Describe the solution you'd like
A way to tell the TypeSpec code generator which file to use for client generation once v2 is publicly supported.

Describe alternatives you've considered
Skipping code generation in CI.

Additional context
N/A

Information Checklist
Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report

• Description Added
• Expected solution specified

[srnagar]

Related issue - Azure/azure-sdk-tools#11334