enhancement: publish on Accrescent

### Your use case

#### What would you like to do?
Publish the app on [Accrescent](https://accrescent.app)

#### Why would you like to do it?
Accrescent is a novel app store in the way that it combines the security of Gplay (see their website for details) with the privacy benefits of Fdroid. Updates will be able to be pushed automatically, which would help with testing.

I personally like it because it's mirrored in the GrapheneOS app store and I would be able to install Element X with a full trust chain to the OS boot keys without having to rely on Google.

#### How would you like to achieve it?
You will need to ask the dev (lberryimage) for an invite, then submit your app. Updates can be theoretically automated using CI pipelines but there is currently no official automation support.

### Have you considered any alternatives?

There are no other secure app stores other than GPlay that I know of, and GPlay has privacy issues.

### Additional context

[Fdroid's security issues](https://privsec.dev/posts/android/f-droid-security-issues/)

### Are you willing to provide a PR?

No