fix(expo): use internal expo plugin & docs(expo): updated docs & chore: fixed testsuite and linting

[Bram-dc]

fix(expo): use internal expo plugin & docs(expo): updated docs

• Updated the internal expo plugin and added the correct docs on how to use it.

chore: fixed testsuite and linting

• Fixed some linting errors
• Updated the previously unused/broken jest testsuite and added the test for the plugin.
• Fixed the install command, now excludes example and playground when using the parent tsc command in order to fix the prepare command on installing.