[feat] Implement plugin system

[kaeeraa]

Is your feature request related to a problem?

No.

Describe the solution you'd like

I would like to see a plugin system in the client, similar to the ExteraGram plugin system on mobile devices. Are there any plans to write it? If so, then I could do it

Describe alternatives you've considered

what does this field means in context of feature suggestion

Additional context

No response

[notwindstone]

Are there any plans to write it? If so, then I could do it

could you explain how are you planning to do this