[Form] Cannot have forms in project subfolders (must be in the root project folder)

[iliyan-velichkov]

When placing forms in a sub project folders like test-project/forms and clicking on Regenerate button, the generation fails like this

>>> POST 
http://localhost:8080/services/js/service-generate/generate.mjs/model/workspace/test-project?path=forms,test-form.form

Body:

{
  "template": "template-form-builder-angularjs/template/template.js",
  "parameters": {
    "fileName": "test-form",
    "genFolderName": "test-form"
  },
  "model": "forms/test-form.form"
}

<<< 400 Bad request
Body:

{"status":400,"message":"Model file 'forms,test-form.form' does not exist in Project 'test-project' in Workspace 'workspace'."}