[TASK] Rename TS files to .typoscript (#19)

Resolves: #8

CHANGELOG.md

@@ -15,6 +15,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - Composer script for PHP linting
 
 ### Changed
+- Use `.typoscript` as file extension for TS files (#19)
 - Convert the PHP namespaces to "TTN" (#8)
 - Update the contact email in the CoC document (#6)
 - Switch to the `TTN` PHP vendor namespace (#1, #5)

Tests/Functional/Controller/TeaControllerTest.php

@@ -33,7 +33,7 @@ class TeaControllerTest extends FunctionalTestCase
             1,
             [
                 'EXT:fluid_styled_content/Configuration/TypoScript/setup.txt',
-                'EXT:tea/Configuration/TypoScript/setup.txt',
+                'EXT:tea/Configuration/TypoScript/setup.typoscript',
                 'EXT:tea/Tests/Functional/Controller/Fixtures/Frontend/Basic.typoscript',
             ]
         );