fix: Add .editorconfig and c3.php to export-ignore list in .gitattributes. (#135)

Author: terabytesoftw

.gitattributes

@@ -26,11 +26,13 @@
 /CHANGELOG.md		merge=union
 
 # Exclude files from the archive
+/.editorconfig                  export-ignore
 /.gitattributes                 export-ignore
 /.github                        export-ignore
 /.gitignore                     export-ignore
 /.phpstan.neon                  export-ignore
 /.styleci.yml                   export-ignore
+/c3.php                         export-ignore
 /codeception.yml                export-ignore
 /composer-require-checker.json  export-ignore
 /composer.lock                  export-ignore