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.

rojo-test/build-tests/json_as_lua/make-me-a-script.json5

@@ -0,0 +1,12 @@
+{
+  "array": [1, 2, 3],
+  "object": {
+    "hello": "world"
+  },
+  "true": true,
+  "false": false,
+  "null": null,
+  "int": 1234,
+  "float": 1234.5452,
+  "1invalidident": "nice"
+}