fdroidcl: add page

[Rudloff]

• The page (if new), does not already exist in the repo.
• The page is in the correct platform directory (common/, linux/, etc.)
• The page has 8 or fewer examples.
• The PR title conforms to the recommended templates.
• The page follows the content guidelines.
• The page description includes a link to documentation or a homepage (if applicable).

[CLAassistant]

All committers have signed the CLA.

[sbrl]

Hey, @Rudloff! Thanks for the new page. Perhaps you could sign the CLA please? Then we can get to reviewing.

Note that the email address you committed with has to be associated with your GitHub account for it to register.

[mebeim]

Thanks for the page @Rudloff 🙂

[agnivade]

@mvdan - Any comments on this ? 😃 Would you like something changed ?

[mvdan]

I guess I'd also show search to find apps, and install to actually install them on a device. But yeah, LGTM :)

[agnivade]

@Rudloff, since we have space for more, would you like to make those changes ?