add yaml language server

tasks/pkgs/yamlls.yml

@@ -0,0 +1,8 @@
+---
+- ansible.builtin.include_tasks:
+    file: pkgs/nodejs.yml
+  when: pkgconfig_nodejs is undefined
+
+- name: add to npmpkgs
+  ansible.builtin.set_fact:
+    npmpkgs: "{{ npmpkgs + ['yaml-language-server'] }}"