nvim: Add mappings for inspecting treesitter

Simply invokes the `:Inspect` and `:InspectTree` commands, to have
quicker access, especially while tinkering with TS for the foreseeable
future.

nvim/.config/nvim/lua/plugins/treesitter.lua

@@ -79,6 +79,10 @@ return {
 			"TSUpdate",
 			"TSUpdateSync",
 		},
+		keys = {
+			{ "<leader>si", "<cmd>Inspect<cr>", desc = "treesitter element", silent = true },
+			{ "<leader>sI", "<cmd>InspectTree<cr>", desc = "treesitter tree", silent = true },
+		},
 
 		-- show current cursor context at top of buffer
 		-- improves commenting plugin above by using ts