jest.config.ts configuration file in Typescript (#2657)

* jest.config.ts configuration file in Typescript

**Jest** now supports *jest.config.ts* as configuration file.

See [jestjs/jest#9636 for more information.

* apply only to jest.config.ts

Co-authored-by: Roberto Huertas <roberto.huertas@outlook.com>

src/iconsManifest/supportedExtensions.ts

@@ -1964,6 +1964,7 @@ export const extensions: IFileCollection = {
       icon: 'jest',
       extensions: [
         'jest.config.json',
+        'jest.config.ts',
         'jest.json',
         '.jestrc',
         '.jestrc.js',