feat(FEC-10076): add support for dynamic injection

[yairans]

Description of the Changes

• UIManager Exposes addComponent api which actually deligates to PlayerAreaProvider._addNewComponentAndUpdateListeners method (using Render-Props technique)
• Remove empty array condition for removal flow
• Extract Fragment children since add and remove the component behaves worried when children wrapped by a Fragment

CheckLists

• changes have been done against master branch, and PR does not conflict
• new unit / functional tests have been added (whenever applicable)
• test are passing in local environment
• Travis tests are passing (or test results are not worse than on master branch :))
• Docs have been updated

[esakal]

I would consider two things - not related to each other

1. provide a noop method as a fallback () => { return () => {} }. relevant also for line 181
2. expose a public method for the PlayerAreaProvider instead of passing the method to the upper component and use ref to invoke that method

both not mandatory but might be more solid

[yairans]

1. done
2. I tried this option. it's doesn't work since the ref points the withLogger wrapper

[esakal]

approving as your code seems fine. just check my comment above for possible improvements