Add the option (and logic) to encrypt the exported .pck or .zip file and decrypt it at runtime to access the data

[dariuspranskus]

Describe the project you are working on:
Any project which needs to be exported to Android

Describe the problem or limitation you are having in your project:
This is related to #946 and #947. Currently export to Android functionality pushes individual project files into assets folder in exported APK. after implementing features #946 and #947, system by default will push the PCK or ZIP file instead. Adding PCK encryption option on top of that will add another level of protection.

Describe the feature / enhancement and how it helps to overcome the problem or limitation:
Option will allow the exported PCK file to be encrypted and decrypted on the fly during the load process.

Describe how your proposal will work, with code, pseudocode, mockups, and/or diagrams:

If this enhancement will not be used often, can it be worked around with a few lines of script?:
Every time when the project is exported to Android

Is there a reason why this should be core and not an add-on in the asset library?:
Because it is core export functionality

[dariuspranskus]

#38308 seems to enable this functionality

[Calinou]

This was implemented by godotengine/godot#38308, closing.