Better typescript support

Typescript (#2)

* Added typescript outDir support for getOutputFilePath

* Compile if tsconfig is present

* Added a isTypescript flag

* Parse tsconfig fix

* Fix relative directory for mocks

* Updated test-ext logic

* Autoswitch ext for mocks

* Remove ext from imports

* Updated import code for typescript

* Refactor packaged external file

* Autoswitch dialect for PackagedExternalFile

* Check before trying to remove directory

* Autoswitch entrypoint

* Fixed mock offsets

* Typescript in AssignmentOperation

* MockImportBlock typescript support

* Autoswitch prettier parser

* Fixed mock import statements

* Fixed TestFileBlock test

* Updated documentation