add preview fullscreen fallback

add isFullscreen condition
add fullscreenState Expression
add allow receiving messages
improved typing

Author: Armaldio

.gitignore

@@ -3,4 +3,5 @@ node_modules/
 
 # Ignore all files in the build directories
 /dist/*
-/export*/*
+/export*/*
+src/c3/

examples/example.c3p

@@ -30,6 +30,7 @@
   "homepage": "https://github.com/CynToolkit/construct-plugin#readme",
   "devDependencies": {
     "c3ide2-types": "1.0.1",
-    "electron": "34.0.2"
+    "electron": "34.0.2",
+    "typescript": "5.7.3"
   }
 }