Set Noto Sans Mono as monospace default font

Should help improve [1].

[1]: https://github.com/haikuports/haikuports/issues/3116

Change-Id: I29dd94e3380c3a5935d47d97e2a2ac1c5fb7e774
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3070
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Revert "Switch default fixed font from NotoMono to NotoSansMono"

This reverts commit b2acee1cb986b696adfad7daabfe9279949a3e54.

Reason: NotoSansMono is not per se a fixed font.

Switch default fixed font from NotoMono to NotoSansMono

Change-Id: Ib9eab5a2e266393b234cf7f4a6934fd58e31c943
Reviewed-on: https://review.haiku-os.org/48
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

Revert "Revert "Switch from DejaVu to Noto font""

This reverts commit 2423ba84701f064cb78a40010113a8a45cc02a92.

Revert "Switch from DejaVu to Noto font"

This reverts commit 945566ff43583e4f8102b4440c88f53dae775cb4.

As discussed on the mailing lists and with Humdinger off-list:
* The general design concensus tends slightly towards DejaVu, as metrics
of DejaVu look much better (DejaVu 12 and Noto 13 are roughly the same size,
but Noto has much wider margins with that)
* While Noto does have a wider set of fonts with support for lots of
different languages, DejaVu actually has built-in support for more
Unicode languages (the default Noto has, as far as I can tell, only
Latin/Greek/Cyrillic [2416 glyphs], while DejaVu also has Armenian, Georgian,
and a few other scripts too [5119 glyphs].)
* The worse rendering of DejaVu appears to have been somewhat rectified by
disabling the average-based subpixel filter in app_server.

Switch from DejaVu to Noto font

As discussed, Noto renders much better with freetype 2.7 [1].
The DejaVu package is still in the HaikuPorts repo and can be installed
manually just like all the other available fonts.

[1] http://www.freelists.org/post/haiku-development/freetype-update-from-265-to-27

interface_guidelines: Add a Haiku-esque stylesheet.

Fixes #11782.