Enable more compile warnings

See merge request Librem5/phosh!100

and fix the fallout.

Detects missing includes and missing static defitions

This allows us to use them in the tests as wel.

Add Issue template

See merge request Librem5/phosh!99

One wrong asserting and a loggng statement cleanups

See merge request Librem5/phosh!98

We want to check for equality. This avoids a leak.

This avoids an extra empty line in the output.

Use login shell so /etc/profile.d gets parsed

See merge request Librem5/phosh!96

and use a simpler expressionfor WL_OUTPUT_CURRENT_MODE

This makes sure all files from /etc/profile are properly sourced.  The
trick is taken from /usr/bin/gnome-session itself.

so applications requiring X11 can start.  See e.g.
Librem5/Apps_Issues#42 is fixed.

Don't remove it form the config so it's easy for people to test without
XWayland.

Use current mode

See merge request Librem5/phosh!95

Instead of hardcoding it use the data we have.

So far we looked at the mode with the highest resolution.

Another fix for #30. Where add a custom mode to the end of the mode
list.

This returns the currently set mode

Update German translation

See merge request Librem5/phosh!94

phosh: Scale monitor resolution

Closes #30

See merge request Librem5/phosh!93

wl_output gives us the unscaled resolution. We need to scale that with
the currently set scale. This brings the settings menu back to the
screen and makes the favorites menu fit.

Also take the home buttons size into account and flip width and height
on rotation.

Closes: #30

Take screenshots during CI

See merge request Librem5/phosh!92

We're only interested in phosh's criticals and warnings so adjust
the corresponding greps.

implement system prompter

Closes #19

See merge request Librem5/phosh!67

This gives us system modal dialogs for all important pin entries (if
they use Gcr as they should).

Based on gnome-shell's shell-keyring-prompt.c as well as Gcr's
own ui/gcr-prompt-dialog.c

Closes: #19

This makes e.g. gcr system prompter happy but other things like
services trying to connect to g-s-d need it too.

This should increase readability and make it simpler for folks not
familiar with the script.

settings: Make brightness slider work correctly

See merge request Librem5/phosh!90