Comments on the same line as field names are not rendered well by clang-format.
Even if manually edited, it seems not a preferable way to comment on a field.
Move the comment in the line before.

This adds a global "--offline" option and allows its use with "add" and
"modify" commands. The "add" looks like this:

  $ nmcli --offline conn add type ethernet ens3 ipv4.dns 192.168.1.1 \
      >output.nmconnection

The "modify" is essentially implementing what's been suggested by
Beniamino in bugzilla ticked (referred to below):

  $ nmcli --offline connection modify ens3 ipv4.dns 192.168.1.1 \
      <input.nmconnection >output.nmconnection

Other commands don't support the argument at the moment:

  $ nmcli --offline c up ens3
  Error: 'up' command doesn't support --offline mode.

https://bugzilla.redhat.com/show_bug.cgi?id=1361145

Use bitfields to save a few bytes. This involves swapping gboolean for
bool and some reordering in order to get them grouped together.

The patch looks horrible, because clang-format decides to put itself and
seem to go out of its way to make this whole file look idiotic.
What can you do.

We use clang-format for automatic formatting of our source files.
Since clang-format is actively maintained software, the actual
formatting depends on the used version of clang-format. That is
unfortunate and painful, but really unavoidable unless clang-format
would be strictly bug-compatible.

So the version that we must use is from the current Fedora release, which
is also tested by our gitlab-ci. Previously, we were using Fedora 34 with
clang-tools-extra-12.0.1-1.fc34.x86_64.

As Fedora 35 comes along, we need to update our formatting as Fedora 35
comes with version "13.0.0~rc1-1.fc35".
An alternative would be to freeze on version 12, but that has different
problems (like, it's cumbersome to rebuild clang 12 on Fedora 35 and it
would be cumbersome for our developers which are on Fedora 35 to use a
clang that they cannot easily install).

The (differently painful) solution is to reformat from time to time, as we
switch to a new Fedora (and thus clang) version.
Usually we would expect that such a reformatting brings minor changes.
But this time, the changes are huge. That is mentioned in the release
notes [1] as

  Makes PointerAligment: Right working with AlignConsecutiveDeclarations. (Fixes https://llvm.org/PR27353)

[1] https://releases.llvm.org/13.0.0/tools/clang/docs/ReleaseNotes.html#clang-format