HaikuDepot: Languages List

Abstacts the list of supported languages into
the LanguageModel class preventing use of
List. Also; fix a few cases where newer
logging techniques may have caused incorrect
logic flow.

Relates To #15534

Change-Id: I144fe4788abdaf0d93e53eeabc97b3f7aa2ec710
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3085
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

HaikuDepot: Better Logging

Changes the logging in HD to use a macro for the
various log levels to declutter the code and to
make it easier to more systematically log.

Change-Id: I025970707a0a11e7e3aaa4b52fc91288af0183f5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3018
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

HaikuDepot: Fixes for Tabs

Cleans up the code around tab-switching and
also improves some logic around inserting
packages into the list of 'prominent'
packages by using a binary search.

If Haiku is installed into an environment with no
networking then it won't be able to talk to HDS
and so won't know which packages are promoted.
In this case switch the user to the "all packages"
tab so they are not shown a blank panel by default.

Relates to #14675, #14927

Change-Id: I14dd3be4af09a98245ddd0a9704bd8d53ed64a53
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2478
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

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>