Migrate aframe-searxr

[alejandrosame]

https://github.com/ngi-nix/aframe-searxr

Tracking issue: #12.

[alejandrosame]

I doesn't build in its current state

nix build git+https://github.com/ngi-nix/aframe-searxr
error: builder for '/nix/store/9nl9iqzw64c3mxfzl0slpxp02bj15xnj-aframe-searxr-unstable-2021-09-01.drv' failed with exit code 2;
       last 10 log lines:
       > cat: ./js/lib/gltfy.js/src/GLTFY.css.js: No such file or directory
       > cat: ./js/lib/gltfy.js/src/GLTFY.threejs.js: No such file or directory
       > cat: ./js/lib/gltfy.js/src/GLTFY.aframe.js: No such file or directory
       >
       > real	0m0.012s
       > user	0m0.009s
       > sys	0m0.008s
       > installing
       > install flags: SHELL=/nix/store/qfb4j7w2fjjq953nd9xncz5mymj5n0kb-bash-5.1-p8/bin/bash install
       > make: *** No rule to make target 'install'.  Stop.
       For full logs, run 'nix log /nix/store/9nl9iqzw64c3mxfzl0slpxp02bj15xnj-aframe-searxr-unstable-2021-09-01.drv'.