Add project configuration and test files in JSON5 format

- Introduced new configuration files for testing, including `default.project.json5`, `client_in_folder`, and others.
- Updated existing project files to use JSON5 format, ensuring consistency across configurations.
- Added new Lua scripts and model files to support various test cases.
- Adjusted snapshot files to align with the new project structure and properties.

src/snapshot_middleware/json.rs

@@ -75,7 +75,7 @@ mod test {
     fn instance_from_vfs() {
         let mut imfs = InMemoryFs::new();
         imfs.load_snapshot(
-            "/foo.json",
+            "/foo.json5",
             VfsSnapshot::file(
                 r#"{
                   "array": [1, 2, 3],
@@ -98,7 +98,7 @@ mod test {
         let instance_snapshot = snapshot_json(
             &InstanceContext::default(),
             &vfs,
-            Path::new("/foo.json"),
+            Path::new("/foo.json5"),
             "foo",
         )
         .unwrap()
@@ -111,7 +111,7 @@ mod test {
     fn with_metadata() {
         let mut imfs = InMemoryFs::new();
         imfs.load_snapshot(
-            "/foo.json",
+            "/foo.json5",
             VfsSnapshot::file(
                 r#"{
                     "array": [1, 2, 3],
@@ -136,7 +136,7 @@ mod test {
         let instance_snapshot = snapshot_json(
             &InstanceContext::default(),
             &vfs,
-            Path::new("/foo.json"),
+            Path::new("/foo.json5"),
             "foo",
         )
         .unwrap()