MM-62954 E2E/Playwright shared library (#30177)

* feat: Add package.json for Playwright library with dependencies

* feat: Add explicit exports for test.config in playwright-lib package

* feat: Add initialization setup for Mattermost E2E testing with admin and user client

* fix: Update package dependencies and resolve TypeScript build errors

* feat: Update package exports for test.config to support both CommonJS and ESM

* playwright shared library

* add README, fix pipeline

* keep file structures, move report up to playwright

* minimize API, use the prerelease versions of client and types

* bump version

* update package*.json

* resolve merge conflict

* update depedencies and merge conflicts

* update readme and fix ci

* remove unnecessary export and list all external packages

* fix import for Client4

.github/workflows/e2e-fulltests-ci.yml

@@ -70,7 +70,7 @@ jobs:
       SERVER: "${{ steps.generate.outputs.SERVER }}"
       ENABLED_DOCKER_SERVICES: "${{ steps.generate.outputs.ENABLED_DOCKER_SERVICES }}"
       TEST_FILTER_CYPRESS: "${{ steps.generate.outputs.TEST_FILTER_CYPRESS }}"
-      TEST_FILTER_PLAYWRIGHT: "tests/ --project=chrome" # Note: Run on chrome but eventually will enable to all projects which include firefox and ipad.
+      TEST_FILTER_PLAYWRIGHT: "tests"
       BUILD_ID: "${{ steps.generate.outputs.BUILD_ID }}"
       TM4J_ENABLE: "${{ steps.generate.outputs.TM4J_ENABLE }}"
       REPORT_TYPE: "${{ steps.generate.outputs.REPORT_TYPE }}"