add bottom padding in note preview

[fm-sys]

The FAB was overlapping with the note preview, which was complained about in #2272 and many duplicate issues. This PR adds some padding to the end of the scroll view.

With this fix, the textview will still be displayed behind the fab, but it now will be possible to scroll the text further up thanks to a blank view component which gets added to the end if the scroll content.

THis will close #2272

Before: Important text may be hidden without posibility to see it	Now: Text can be scrolled further up

[fm-sys]

The PR build is currently failing with

  - On artifact material-color-utilities-48ed8e86d9.module (com.github.nextcloud.android-common:material-color-utilities:48ed8e86d9) multiple problems reported:
      - in repository 'maven': artifact is not signed
      - in repository 'maven': expected a 'sha256' checksum of '66521c5651965b19eaab1fc24bbed9fc99c398437678e51a0a7b677f35037a0c' but was '6164d2c0add8d826d4310c92e17c8ba4deabfd81534206b75b2830a7dcf51e58'

This can indicate that a dependency has been compromised. Please carefully verify the checksums.

However that's a problem with the build pipeline independent of this PR, as build is failing for all other commits to this repository as well.

May to take a look? Thank you very much!

[AndyScherzinger]

Tested successfully and added a slight simplification via 4a27f36 given that the extra space can now simply be added via the newly introduced parent element.

Thanks for this contribution / PR @fm-sys

I'll check with @tobiasKaminsky how quickly we an get this released 😃

[fm-sys]

A new release would be great! In fact, it's almost a year since the last release and there are probably quite some other cool changes waiting to finally go live :)

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[Buntbart]

This padding fixed the problem with the overlapping edit button but apparently it adds a problem with the now overlapping keyboard when trying to actually edit the text...

[fm-sys]

It's not caused by this PR but a different change which seem to also be part of the new release. Should be relatively easy to fix though...

[AndyScherzinger]

Looping in @alperozturk96 for the comments above since I am AFK

[fm-sys]

just ran a git bisect, commit caa792b seems to have caused the issues mentioned above as side effect...