home: vim: replace 'fzf' with 'telescope'

I like the fact that it uses built-in buffers to preview files.

It also has more inertia behind it, tighter integrations in the
ecosystem.

home/vim/after/plugin/mappings/fzf.vim

@@ -1,13 +0,0 @@
-lua << EOF
-local wk = require("which-key")
-
-local keys = {
-    f = {
-        name = "Fuzzy finder",
-        b = { "<cmd>Buffers<CR>", "Open buffers" },
-        f = { "<cmd>GFiles<CR>", "Git tracked files" },
-    },
-}
-
-wk.register(keys, { prefix = "<leader>" })
-EOF

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

@@ -0,0 +1,16 @@
+lua << EOF
+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" },
+    },
+}
+
+wk.register(keys, { prefix = "<leader>" })
+EOF
+