Input preferences: some style fixes.

Problems found by running haiku-format and looking at the resulting
files. Manually triaged to keep only the correct changes, currently
haiku-format is making a lot of unwanted changes as well.

Merging the correct changes allows us to see the incorrect ones more
easily and continue working on fixing them.

Mouse preferences: Build fixes

Input: declare BString to get the Mouse Name

Change-Id: I3476f58839202a6fd8c93e325a15045963a9b7b2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3125
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Mouse Preferences: store settings for multiple mouses.

Use a BMessage for the mouse settings. Store an array of mouse_setting
and an array of names for the corresponding mouses.

The input preferences can load the settings in both the old and new
format. If in the old format, the settings are applied to all mouses.

In this commit, input_server is not modified yet to use the new settings
format, leading to unusable mouse.

Change-Id: I37dd27cfa3ac55c6956cc4fb7fc8fabc85a59448
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2953
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Connected Devices: Mouse, Touchpad and Keyboard

-Resolve some issues.
-Added the connected devices code in the main window.
-Replace BUTTON_DEFAULTS and BUTTON_REVERT with kMsgDefaults and kMsgRevert.

Change-Id: I3b0c86fc581056859239df0fbf2c085b8d168136
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1619
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Completed Mouse and Touchppad preferences

Complete working and view of pointing devices(mouse and touchpad).

Resolve some issues.
Added the Jamfile

Change-Id: I4db021cb8c63971e5af60bd254c8b3b588d023e9
Reviewed-on: https://review.haiku-os.org/c/1426
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>