libraries/box_lib: Post-SVN tidy (#433)

- Move source code from `trunk` into root directory.
- Update build files and ASM include paths. Add SPDX license header where appropriate.
- Note: Line endings standardised from `CRLF` > `LF`, so best to view diffs with whitespace changes hidden.

(Work towards [#75](KolibriOS/kolibrios#75), point 3)

Reviewed-on: KolibriOS/kolibrios#433
Reviewed-by: Burer <burer@kolibrios.org>
Reviewed-by: Ivan B <1+dunkaist@noreply.localhost>
Reviewed-by: Mikhail Frolov <mixa.frolov2003@gmail.com>
Co-authored-by: Andrew <dent.ace@gmail.com>
Co-committed-by: Andrew <dent.ace@gmail.com>

programs/develop/libraries/box_lib/asm/Tupfile.lua

@@ -0,0 +1,2 @@
+if tup.getconfig("NO_FASM") ~= "" then return end
+tup.foreach_rule({"ctrldemo.asm", "editbox_ex.asm", "tooltip_demo.asm"}, "fasm %f %o " .. tup.getconfig("KPACK_CMD"), "%B")