add mappings, add disabled line mover keybinds

lua/plugins/mappings.lua

@@ -0,0 +1,19 @@
+return {
+  {
+    "AstroNvim/astrocore",
+    ---@type AstroCoreOpts
+    opts = {
+      mappings = {
+        -- first key is the mode
+        n = {
+          -- ["C-S-Up"] = { ":m -2<CR>", desc = "Move line up" },
+          -- ["C-S-Down"] = { ":m +1<CR>", desc = "Move line down" },
+        },
+        v = {
+          -- ["<M-k>"] = { ":m '<-2<CR>gv=gv", desc = "move line up" },
+          -- ["<M-j>"] = { ":m '>+1<CR>gv=gv", desc = "move line down" },
+        },
+      },
+    },
+  },
+}