Rework EMBA integration

Rework EMBA integration

* test/infra/Dockerfile.emba (emacs-inotify, emacs-filenotify-gio)
(emacs-eglot, emacs-tree-sitter, emacs-gnustep)
(emacs-native-comp-speed0, emacs-native-comp-speed1)
(emacs-native-comp-speed2): Use "-j `nproc`".
(emacs-eglot): Add libxml2-dev and node-typescript.
(emacs-tree-sitter) Add libxml2-dev and tree-sitter-rust.

* test/infra/Makefile.in (subdir_template): Simplify make_params.

* test/infra/gitlab-ci.yml (.job-template): Set environment
variable NPROC.  Use "-k -j \$NPROC".
(test-filenotify-gio, test-eglot, test-tree-sitter)
(test-native-comp-speed2): Simplify make_params.

* test/infra/test-jobs.yml: Regenerate.