Integrate user-created assets (emoji. transitions, masks) in Openshot

[raindropsfromsky]

Currently, Openshot provides a limited palette of assets like emojis and transitions.
However, these assets are fixed, and the vast treasure of online resources is not availed of.

Openshot should emulate Blender, which has an asset browser that allows the user to link up with online repositories and insert the assets directly. It allows the user to even get assets from websites that require a username+password. It can also conduct a search right from Blender, and find a matching asset, and get it.

Secondly, Openshot should leverage the Openshot users community, and set up a section where they can upload user-contributed assets. All these assets should be directly accessible from within Openshot.

For example, in the Animated text dialog, at the end of the default effects, provide a More... button, which takes the user to an online repository, from where he can load more effects.

The above was an example of a runtime addition of the asset, which is not added to the default UI of Openshot.
(Every asset is directly inserted to the project, without adding it first to the UI.)

But also allow the user to download selected assets to the default UI of Openshot.
So from that moment, these assets are available to be applied to any project.

The user-created assets should include even animated titles, such as this.
(Watch the first 4 seconds for the demo. The rest of the video explains how to construct the effect.)