feat: add support for coder_git_auth data source (#6334)

* Add git auth providers schema

* Pipe git auth providers to the schema

* Add git auth providers to the API

* Add gitauth endpoint to query authenticated state

* Add endpoint to query git state

* Use BroadcastChannel to automatically authenticate with Git

* Add error validation for submitting the create workspace form

* Fix panic on template dry-run

* Add tests for the template version Git auth endpoint

* Show error if no gitauth is configured

* Add gitauth to cliui

* Fix unused method receiver

* Fix linting errors

* Fix dbauthz querier test

* Fix make gen

* Add JavaScript test for git auth

* Fix bad error message

* Fix provisionerd test race

See https://github.com/coder/coder/actions/runs/4277960646/jobs/7447232814

* Fix requested changes

* Add comment to CreateWorkspacePageView

site/src/testHelpers/entities.ts

@@ -1409,3 +1409,10 @@ export const mockParameterSchema = (
     ...partial,
   }
 }
+
+export const MockTemplateVersionGitAuth: TypesGen.TemplateVersionGitAuth = {
+  id: "github",
+  type: "github",
+  authenticate_url: "https://example.com/gitauth/github",
+  authenticated: false,
+}

site/src/testHelpers/handlers.ts

@@ -89,6 +89,18 @@ export const handlers = [
       )
     },
   ),
+  rest.get(
+    "/api/v2/templateversions/:templateVersionId/rich-parameters",
+    async (req, res, ctx) => {
+      return res(ctx.status(200), ctx.json([]))
+    },
+  ),
+  rest.get(
+    "/api/v2/templateversions/:templateVersionId/gitauth",
+    async (req, res, ctx) => {
+      return res(ctx.status(200), ctx.json([]))
+    },
+  ),
   rest.get(
     "api/v2/organizations/:organizationId/templates/:templateName/versions/:templateVersionName",
     async (req, res, ctx) => {