[FEATURE] Simplify the custom blender dist usage & optimize dist download

[rabits]

Is your feature request related to a problem? Please describe.

Right now it's hard for the user to provide the custom distributive of blender and overall the logic of getting the dist from repo is taking a long time and could produce errors.

Describe the solution you'd like

It's better to upload the distributive (if it's not here or changed) from Addon to the bucket and use it from the bucket during the download process. This will simplify and speed-up the initial setup process. Probably need to leave the option to use the direct url (because if it's an organization - they probably have a cloud service to store and distribute the artifacts).