changes:
- Moved Gradle deps setup to `nix/deps/gradle`
- Dropped `nix/mobile/android/maven-and-npm-deps/maven`
- Used GNU Parallel to optimize `nix/deps/gradle/generate.sh`
- Move Maven+Node shell setup from `release-android.nix` to Android shell
- Moved AAPT2 patching to `nix/pkgs/aapt2`
- Drop `patchPhase` and `gradlew` use from `release-android.nix`
- Simplify symlinking `{mobile,desktop}/js_files/*`
- Add new `nodejs` shell and merge it with `clojure` and `gradle`
- Re-created Gradle deps files with new scripts:
- `nix/deps/gradle/proj.list`
- `nix/deps/gradle/deps.list`
- `nix/deps/gradle/deps.urls`
- `nix/deps/gradle/deps.nix`
Signed-off-by: Jakub Sokołowski <jakub@status.im>
