Scripts can now be saved ANYWHERE!

[adriengivry]

Description

Previously, Overload always created a Scripts/ folder inside of a user's project folder.
Scripts can now be located anywhere inside of the project's Assets/ folder.
This allow scripts to be placed anywhere, including inside of sub-folders.

Technically this would be a breaking change, but a nice window has been added to automatically relocate scripts from Scripts/ to Assets/Scripts/ when an old project is opened.

In Lua, behaviours can be retrieved using GetBehaviour:

--- Assuming a script Foo.lua is located in a Scripts/ folder
--- The following calls are valid:
self.owner:GetBehaviour("Foo") --- by script name
self.owner:GetBehaviour("Scripts/Foo") --- by script path
self.owner:GetBehaviour("Scripts/Foo.lua") --- by script path with extension

Related Issue(s)

Fixes #385

Review Guidance

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Screenshots/GIFs

Checklist

• My code follows the project's code style guidelines
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes don't generate new warnings or errors

[adriengivry]

I'm not exactly thrilled about this, but this is necessary to keep all the GetBehaviour("{name}") from breaking after this update. Another option would be to move this code to GetBehaviour itself, but having lua-specific code in there wouldn't make much sense. Could definitely be improved in the future tho.