ci: add lazy.lua for maintaining opts_extend configuration

Author: mehalter

lazy.lua

@@ -0,0 +1,11 @@
+return {
+  "AstroNvim/astrocore",
+  opts_extend = {
+    "rooter.ignore.servers",
+    "rooter.ignore.dirs",
+    "sessions.ignore.buftypes",
+    "sessions.ignore.dirs",
+    "sessions.ignore.filetypes",
+    "git_worktrees",
+  },
+}