Add GH Action to run SwiftLint and unit tests for pr's to main

[mpospese]

Intro

Let's leverage GitHub Actions to do some CI/CD work for us. It would be great to check SwiftLint + unit tests prior to allowing merges to main.

Task

add a GitHub action by adding a file named run_linter_and_unit_tests.yml to .github/workflows directory.

Copy the contents of the file from YCoreUI only updating references to YCoreUI to YComponentBrowser and delete the two steps related to tvOS so that it actually builds.

AC

The newly created automated check on the PR branch runs and completes successfully (otherwise GitHub won't allow the PR to be merged anyway)