GitLab

Related #1248

Fixes #1250

Not currently required, but allows plugins to optionally use features from
libportal to access desktop features.

We probably need to figure out how we want to use these things and stay
compatible with other platforms like macOS in the future.

This imitates the behavior of `IdeTree`, and helps distinguish many
similar files from each other without resizing the sidebar.

Also cleanup `gbp_buildui_pane_diagnostic_tooltip()` so it mimics the
pattern in `plugins/todo` and `libide/tree`.

Use `gtk_tree_view_set_tooltip_row()` to properly position the tooltips
next to their corresponding rows.

When starting a build stage `on_build_stage_query()` would crash when
the `IdeSubprocessLauncher` had a command line of more than 2 items and
none of those were ninja or ninja-build.

Found the crash when using a jhbuild pipeline, since its argv is
`jhbuild run ninja`, the first loop got stuck on comparing `jhbuild`
against ninja, ninja-build, and then infinity.

The above because `g_strv_contains()` expects NULL terminated arrays,
otherwise it will start accessing random memory and likely crash.

Prevent applying single location diagnostic if a range is available

Fixes #1246

Instead of highlighting to the end of the line, just highlight the next
visible word. If we are not starting or in a word, highlight to the end
of the line.

Fixes #1247

This has to do with diagnostic generation, so make that more clear.

Related #1245

Fixes #1244

Fixes #1233

Installing sphinx cache is not required for a user and not installing
the .doctrees directory also makes gnome-builder reproducible.

ide_trace_function was being defined even when IDE_ENABLE_TRACE was
FALSE, triggering a `no previous declaration` warning.

Fix issue #1241

(cherry picked from commit 71b65c87592612db75c2982ceaf3e0e7fe553a3d)