Project tree view and creation (#203)

* Implement creating and importing new projects

* Add downloading a zip of a project

* Project validation (WIP)

* Add project side panel, remove project pages

* Project file saving

* Add file tree actions to rename and delete

* Fix file creation auto focus

* Add button to save file from menu

* Add project creation

* Fix specificity on version switcher button

* Update default version to 1.19

* List project files by type, remember project and delete project

src/app/pages/index.ts

@@ -5,6 +5,5 @@ export * from './Guide'
 export * from './Guides'
 export * from './Home'
 export * from './Partners'
-export * from './Project'
 export * from './Sounds'
 export * from './Versions'