* Added getAdditionalSelectors function so that nativescript-theme can be functional again in NS 4.x
* Change to a better more extensible additional css system.
* removed redunant function on the name.
* Fix lint issues
* Adding mergeSelectors to the remove function
* Added test of new add/remove css functions.
* fix: revert testRunner.ts changes that disabled all tests except style
* refactor: fix typo
* chore: fix typo and change test to no not affect global styles