programs/demos: Post-SVN tidy (part 1) (#409)

- Move source code from `trunk` into root directory for each program.
- 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, point 3)

Reviewed-on: KolibriOS/kolibrios#409
Reviewed-by: Ivan B <dunkaist@gmail.com>
Reviewed-by: Burer <burer@kolibrios.org>
Co-authored-by: Andrew <dent.ace@gmail.com>
Co-committed-by: Andrew <dent.ace@gmail.com>

data/Tupfile.lua

@@ -450,9 +450,9 @@ tup.append_table(img_files, {
  {"TIMER", VAR_PROGS .. "/other/Timer/Timer"},
  {"UNZ", VAR_PROGS .. "/fs/unz/unz"},
  {"ZKEY", VAR_PROGS .. "/system/zkey/trunk/ZKEY"},
- {"3D/3DWAV", VAR_PROGS .. "/demos/3dwav/trunk/3dwav"},
+ {"3D/3DWAV", VAR_PROGS .. "/demos/3dwav/3dwav"},
  {"3D/CROWNSCR", VAR_PROGS .. "/demos/crownscr/trunk/crownscr"},
- {"3D/3DCUBE2", VAR_PROGS .. "/demos/3dcube2/trunk/3DCUBE2"},
+ {"3D/3DCUBE2", VAR_PROGS .. "/demos/3dcube2/3DCUBE2"},
  {"3D/FREE3D04", VAR_PROGS .. "/demos/free3d04/trunk/free3d04"},
  {"3D/GEARS", VAR_PROGS .. "/develop/libraries/TinyGL/asm_fork/examples/gears"},
  {"3D/RAY", VAR_PROGS .. "/demos/ray/ray"},
@@ -598,7 +598,7 @@ tup.append_table(extra_files, {
  {"HD_Load/USB_Boot/", VAR_PROGS .. "/hd_load/usb_boot/setmbr.exe"},
  {"HD_Load/USB_boot_old/", VAR_PROGS .. "/hd_load/usb_boot_old/MeOSload.com"},
  {"HD_Load/USB_boot_old/", VAR_PROGS .. "/hd_load/usb_boot_old/enable.exe"},
- {"kolibrios/3D/3dsheart", VAR_PROGS .. "/demos/3dsheart/trunk/3dsheart"},
+ {"kolibrios/3D/3dsheart", VAR_PROGS .. "/demos/3dsheart/3dsheart"},
  {"kolibrios/3D/flatwav", VAR_PROGS .. "/demos/flatwav/trunk/flatwav"},
  {"kolibrios/3D/mos3de", VAR_PROGS .. "/demos/mos3de/mos3de"},
  {"kolibrios/3D/info3ds/INFO3DS", VAR_PROGS .. "/develop/info3ds/info3ds"},