HaikuDepot: Do not inadvertently modify the real errno.

Found by GCC 11 warnings.

HaikuDepot: Switch to v2 API

This switches to a new API format "v2" being introduced
on HDS. The version of the application is also bumped
at the same time in order to make a later cut-off point
possible for compatibility.

Change-Id: I577fd143ac9d001171bca7213c82e3280af1c4de
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4217
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

HaikuDepot: Remove Custom List

Closes #15534

Change-Id: I23fa60145607c3e8f25552f24c5e2c630b940537
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3758
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

HaikuDepot: Alert Naming

Change capitalization in the titles of alerts. Change
alerts' warnings to avoid the word "Haiku".

Resolves #16117

Change-Id: Id9aacf83d7e8364a1e9b0bfa9a98532108f906e3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2808
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Various translation fixes.

Closes tickets #15892 and #15893

HaikuDepot: remove double space after full stop

Reported by translator loic (thanks!). The double space is only removed in
user-facing strings, I did not touch the comments.

For those interested in an internet controversy, search the internet for
the origins of the double space after a period. In any case, for consistency with
other user facing strings, go to a single space after a period.

HaikuDepot: Refactor of Login

These changes cover a rework of the login and
account creation logic before making additional
changes related to the user usage conditions.

Relates to #15209

Change-Id: I90b7dbcee5b0285476938c6ced0afc89483d6227
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2023
Reviewed-by: Stephan Aßmus <superstippi@gmx.de>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

HaikuDepot: Error Reporting Improvement

When editing a user rating it can be that the user
is not authenticated properly or there is some
problem. This change improves the error reporting
in this situation to give the user a better idea
about what is going on.

Change-Id: Ib8890c2ea8a7316849486e472aabec05788243ef
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2112
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Minor GUI string changes

HaikuDepot: change BAlert title
DriveSetup: capitalize Mimes -> MIMEs

HaikuDepot: Process and Data-loading Improvements

This change is a reshuffle of the backend processing involved in the
aquisition of data from servers including the pull-down and load of
HPKR data as well as the pull-down and load of data from the
HaikuDepotServer (HDS) system. The driver for this change is to
implement an initial implementation of a progress bar for the
loading of data as the application starts.

The following are notable changes;

* Removed some previously attempted 'functional style' logic in the
model which didn't fit well with C++
* Use of the base-url in the logical mapping from HDS and HD data is no
longer required and has been removed
* Some logging has been improved making it clearer which part of HD
is producing the logging which in turn helps with debugging issues
* List class has been modified to more cleanly support sorted lists
and binary searches; tests have also be updated accordingly
* Reorganise and tidy-up of the data-loading processes' structures
* The local repository update (HPKR) and data-load occur in background
processes now in the same system as the HDS data-load - this has been
crudely shifted from the MainWindow to new Processes and incorporated
into the background processing system
* The 'state-machine' background process runner is now replaced with a
'coordinator' style approach that can more easily handle the new
processes related to HPKR loading.
* Progress for loading processes is shown in the main window in the
WorkStatusView - this is flickering a bit, but basically works
* Added some documentation regarding how Processes work in the system
* The "Refresh Repositories" menu item now also updates data from HDS
* The "Refresh Repositories" menu item is disabled when the background
processes are running that update the repository data

Some further refinement would be good, but this change is large enough
for one round of improvements. There is an issue that the status bar
is used for screenshot display as well as this data-loading, but that
was the case before so it is something that can be dealt with later if
it is a problem.

Change-Id: I7668307645e3aabaf7e4a6e37e2cca80cc0f489e
Reviewed-on: https://review.haiku-os.org/770
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

HaikuDepot: Multiple improvements for user-ratings

* Display of the user-ratings listing improved
* When a user-rating is created / edited, the pkg is updated
* Creation date of the user-rating is unpacked shown
* Ability to create a user-rating with a comment, but no numerical rating
* Stars display show grey if no numerical rating present
* Improvements to error reporting when problem arise
* Parsing of the 'revision' field of the version working
* Removed debug logging for the text engine
* Other minor tweaks

Change-Id: I99f881ab1426641ef4177eec2d3bcacc7cb74e95

HaikuDepot : 'Old Client' Handling

The server side has the ability to reject client
requests where the client is no longer supported
because it is presumably too old. This change
will inform the user when this happens and will
prevent the client from attempting further server
communications within this execution of the
application.