develop/ktcc: Post-SVN tidy

- Move source code from `trunk` into program root directory.
- Update build files and include paths.
- These changes also update the CI build files in `.gitea/workflows/`.
- Note: Line endings standardised from `CRLF` > `LF`, so best to view diffs with whitespace changes hidden.

.gitea/workflows/build.yaml

@@ -66,7 +66,7 @@ jobs:
       - name: Install TCC
         if: steps.cache-toolchain.outputs.cache-hit != 'true'
         run: |
-          cp ${{ gitea.workspace }}/programs/develop/ktcc/trunk/bin/kos32-tcc /home/autobuild/tools/win32/bin/kos32-tcc
+          cp ${{ gitea.workspace }}/programs/develop/ktcc/bin/kos32-tcc /home/autobuild/tools/win32/bin/kos32-tcc
           chmod +x /home/autobuild/tools/win32/bin/kos32-tcc
 
       - name: Build and install objconv