home: vim: use actual lua files

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

home/vim/after/plugin/mappings/tree-sitter-textobjects.lua

@@ -0,0 +1,30 @@
+local wk = require("which-key")
+
+local motions = {
+    ["]m"] = "Next method start",
+    ["]M"] = "Next method end",
+    ["]S"] = "Next statement start",
+    ["]]"] = "Next class start",
+    ["]["] = "Next class end",
+    ["[m"] = "Previous method start",
+    ["[M"] = "Previous method end",
+    ["[S"] = "Previous statement start",
+    ["[["] = "Previous class start",
+    ["[]"] = "Previous class end",
+}
+
+local objects = {
+    ["aa"] = "a parameter",
+    ["ia"] = "inner parameter",
+    ["ab"] = "a block",
+    ["ib"] = "inner block",
+    ["ac"] = "a class",
+    ["ic"] = "inner class",
+    ["af"] = "a function",
+    ["if"] = "inner function",
+    ["ak"] = "a comment",
+    ["aS"] = "a statement",
+}
+
+wk.register(motions, { mode = "n" })
+wk.register(objects, { mode = "o" })