Allow resizing emoji and clipboard views

[Helium314]

Came up during #321, but there are still too many issues to include this in the otherwise working PR.

Maybe the whole PR will be scrapped, maybe only the second commit.
First commit makes the resize roughly work, but the suggestion strip is ignored, and the emoji tab strip appears at smaller scale below the suggestion strip. Resizing does not affect emoji keyboard internals, and always switches to main keyboard.
Second commit tries to set a combined suggestion strip / emoji tab strip, but that does not work well, the emoji tab strip still gets resized for some reason.

There are some more issues that are not mentioned here.

[Helium314]

Added to milstone. This needs to be implemented or scrapped.

[Helium314]

Adjusted attempt, now based on the recent changes to colors.
This is basically the first 2 commits and some fixes.

Emojis now only change size with height scale, otherwise is stays constant when changing bottom padding, adding number row or using one-handed mode.

Issues:

• clipboard ABC key doesn't resize with one-handed mode (not necessary, but looks slightly awkward)
• suggestion strip in clipboard view looks a little out of place
  • what to use as replacement? Some toolbar keys?

[Helium314]

I guess this is ok now.
The clipboard things (top strip and ABC key) will be addressed in a separate commit, possibly unifying bottom key bar with emoji view.