add darkman

dot_local/share/darkman/executable_neovim-background.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# This uses the neovim-remote python package to control other neovim instances.
+# see: https://github.com/mhinz/neovim-remote
+# Further, it is assumed that toggling the background in neovim is enough.
+# Anything else should be handled by the set color scheme.
+
+for server in $(nvr --serverlist); do
+	nvr --servername "$server" -cc "set background=$1"
+done