fix: simplify code navigation and support Gazebo XML files

Remove redundant code-view cancellation and align button labels. Restore module scrollbar thickness while preserving workspace colors, and support config, SDF and world text files locally and remotely.

src/main/remoteModuleFiles.ts

@@ -7,7 +7,7 @@ import base64, json, os, stat, sys
 args = json.loads(base64.b64decode(sys.argv[1]))
 root = os.path.realpath(args['root'])
 skip = {'.git', 'build', 'install', 'log', 'node_modules', 'docker'}
-extensions = {'.c', '.cc', '.cpp', '.cxx', '.h', '.hpp', '.hh', '.py', '.xml', '.urdf', '.xacro', '.yaml', '.yml', '.json', '.txt', '.md', '.cmake', '.launch', '.sh', '.bash', '.toml', '.ini', '.cfg', '.rviz'}
+extensions = {'.c', '.cc', '.cpp', '.cxx', '.h', '.hpp', '.hh', '.py', '.xml', '.urdf', '.xacro', '.sdf', '.world', '.config', '.yaml', '.yml', '.json', '.txt', '.md', '.cmake', '.launch', '.sh', '.bash', '.toml', '.ini', '.cfg', '.rviz'}
 placeholder = 'Binary or large file preview is not available.'
 def content(relative):
     if os.path.isabs(relative) or '..' in relative.split('/'):