Move keybinds to init.lua, add neotest and tiny-inline

lua/plugins/tiny-inline.lua

@@ -0,0 +1,9 @@
+return {
+    "rachartier/tiny-inline-diagnostic.nvim",
+    event = "VeryLazy",
+    priority = 1000,
+    config = function()
+        require("tiny-inline-diagnostic").setup()
+        vim.diagnostic.config({ virtual_text = false }) -- Disable Neovim's default virtual text diagnostics
+    end,
+}