Enhanced options for handling message edits

[koxle]

Is your feature request related to a problem? Please describe. I want to backup all the messages of a channel, the messages may be edited frequently and I want to backup them all.

Describe the solution you'd like Add this option to the web-ui.

Describe alternatives you've considered Make possible to configure the tgcf.config.json from the web-ui.

Additional context N/A

[aahnik]

currently there is only one option. You can just sync edits or do nothing.

I plan to add multiple options

- sync
  - if fails:
    - fresh forward
    - do nothing
- fresh forward
- do nothing
-```