home: vim: use actual lua files

Since most of the settings are actually just lua in a VimL file.

home/vim/after/plugin/mappings/telescope.lua

@@ -0,0 +1,15 @@
+local wk = require("which-key")
+local telescope_builtin = require("telescope.builtin")
+
+local keys = {
+    f = {
+        name = "Fuzzy finder",
+        b = { telescope_builtin.buffers, "Open buffers" },
+        f = { telescope_builtin.git_files, "Git tracked files" },
+        F = { telescope_builtin.find_files, "Files" },
+        g = { telescope_builtin.live_grep, "Grep string" },
+        G = { telescope_builtin.grep_string, "Grep string under cursor" },
+    },
+}
+
+wk.register(keys, { prefix = "<leader>" })