Remove forwarded ports code

[faern]

We no longer support forwarding ports over the VPN tunnel. So the app can stop parsing the ports in the device data type. We can also stop warning the users on logout if they have forwarded ports (because they by definition can't have that, so it's a dead code path)

Fixes DES-224, DES-223

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This change is 

[linear]

DES-224 Remove logic around forwarded ports

As of 1st of June we're removing support for port forwarding.

If a user has forwarded ports we'll show a message informing them about it when they log out/remove a device. This logic and these messages can now be removed. We also store the ports in the daemon and communicate them over the managements interface. All logic around forwarded ports should be removed.

[linear]

DES-223 App GUI freezes when user logs out after device has been revoked through web UI

The App GUI hangs if a device has been revoked from the manage account devices page and the user press "Log out" under Settings > Account.

Affected versions & platforms

• The bug was found and reproduced on Linux (Fedora Workstation 38) using the latest Beta build (2023.4_beta1) as well as the latest commit on main.
• The bug was reproduced on MacOS (the test computer) on the last stable release of Mullvad VPN (2023.3)

[dlon]

Reviewed 25 of 36 files at r1, 1 of 4 files at r4, all commit messages.
Reviewable status: 26 of 43 files reviewed, all discussions resolved

[raksooo]

Reviewed 11 of 11 files at r3, 1 of 1 files at r5.
Reviewable status: 38 of 43 files reviewed, all discussions resolved

[albin-mullvad]

Android code

Probably unrelated to this PR, but when testing this (still ongoing) my device didn't get revoked when expected. Probably an API issue. Investigating right now...

Reviewed 22 of 36 files at r1, 2 of 4 files at r4, 1 of 1 files at r5, all commit messages.
Reviewable status: 42 of 43 files reviewed, all discussions resolved

[dlon]

Reviewed 1 of 4 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved