Fully support url template in Modular

[MaryGao]

fixes #2735
fixes #2794
fixes #2866
fixes #3000

The pr is quite direct and I implemented an url template resolution helper to resolve path and query parameters. Relevant UTs and integration tests are updated to cover the new feature.

[Copilot]

Copilot reviewed 68 out of 82 changed files in this pull request and generated no comments.

Files not reviewed (14)

• packages/typespec-ts/package.json: Language not supported
• packages/typespec-ts/test/azureModularIntegration/routes.spec.ts: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/operations/pathParam/allowReservedTrueWithUriTemplate.md: Evaluated as low risk
• packages/typespec-ts/src/utils/operationUtil.ts: Evaluated as low risk
• packages/typespec-ts/src/index.ts: Evaluated as low risk
• packages/typespec-ts/test/modularIntegration/collectionFormat.spec.ts: Evaluated as low risk
• packages/typespec-ts/test/commands/cadl-ranch-list.js: Evaluated as low risk
• packages/typespec-ts/src/modular/static-helpers-metadata.ts: Evaluated as low risk
• packages/typespec-ts/src/modular/buildOperations.ts: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/example/example.md: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/operations/pathParam/allowReservedWithUriTemplate.md: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/operations/pathParam/allowReservedFalseInAnnotation.md: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/anonymous/anonymous.md: Evaluated as low risk
• packages/typespec-ts/test/modularUnit/scenarios/apiOperations/apiOperations.md: Evaluated as low risk

Comments suppressed due to low confidence (1)

packages/typespec-ts/src/modular/helpers/operationHelpers.ts:1059

• The removal of the allowReserved check for path parameters in the getPathParamExpr function could lead to incorrect URL encoding when reserved characters are involved. Please reintroduce the allowReserved check for path parameters.

const value = defaultValue ? typeof defaultValue === "string" ? `${paramName} ?? "${defaultValue}"` : `${paramName} ?? ${defaultValue}` : paramName;

[timovv]

LGTM. Codegen changes look good, and I see we have good test coverage for the implementation of the static helper. I think this is good as a first cut

[qiaozha]

Please create issues for headers url template support and the deprecation of skipUrlEncoding in core, let's have further communications there.