Element X on PlayStore and F-Droid should have different appname

### Your use case

#### What would you like to do?
Install Element X from F-Droid while having PlayStore one installed.

#### Why would you like to do it?
Install Element X from F-Droid leaving PlayStore one
Or updating apps with no issues if you have both stores in your phone

#### How would you like to achieve it?
changing the appname of one of the 2 apps would fix the conflict, the easiest way is to change F-Droid one like:
io.element.x.fdroid.apk

Obviously there are minor changes to take in mind like appdata folder to avoid conflicts between the 2 apps

### Have you considered any alternatives?

No alternative solutions due to name conflicts.

### Additional context

Taking different apps with same name can lead to multiple issue, like update loops and so on. It's not a good practice.

Telegram for example has telegram direct apk (website downloadable) and PlayStore one that differs in appname and much more.

### Are you willing to provide a PR?

No