chore: add `__tests__` and `__mocks__` to file checker and fix updated names

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

build/files-checker.php

@@ -22,7 +22,6 @@
 $expectedFiles = [
 	'.',
 	'..',
-	'.codecov.yml',
 	'.devcontainer',
 	'.drone.yml',
 	'.editorconfig',
@@ -44,6 +43,8 @@ $expectedFiles = [
 	'.tag',
 	'.tx',
 	'.user.ini',
+	'__mocks__',
+	'__tests__',
 	'3rdparty',
 	'AUTHORS',
 	'CHANGELOG.md',
@@ -60,6 +61,7 @@ $expectedFiles = [
 	'autotest.sh',
 	'babel.config.js',
 	'build',
+	'codecov.yml',
 	'composer.json',
 	'composer.lock',
 	'config',
@@ -74,7 +76,7 @@ $expectedFiles = [
 	'dist',
 	'index.html',
 	'index.php',
-	'jest.config.js',
+	'jest.config.ts',
 	'lib',
 	'occ',
 	'ocm-provider',