restructuring for easier maintenance

- creating src packages when things can't be installed via
  actual system package
- neovim srcpkg is being worked on now

tasks/pkgs/RedHat/nushell.yml

@@ -0,0 +1,16 @@
+---
+- name: install RedHat dependencies
+  set_fact:
+    nushell_pkgdeps:
+      - cargo
+      - libxcb
+      - openssl-devel
+      - libX11-devel
+    nushell_altdeps:
+      - Linux/nushell.yml
+      - "{{ ansible_os_family }}/carapace.yml"
+
+- name: append to pkgs
+  set_fact:
+    syspkgs: "{{ syspkgs + nushell_pkgdeps }}"
+    srcpkgs: "{{ srcpkgs + nushell_altdeps }}"