feat(neovim): AI and other quality of life improvements

- fix: session, conform, vim-illuminate, todo-comments, nvim-navbuddy, lspconfig plugins NOT on vscode
- new: codeium, obsidian.nvim
- Add codeium autocomplete
- fix: todo-comments: Search in hidden files (dotfiles)
- fix: trouble: wasn't working earlier
- new: Switch buffer with <alt-1>..<alt-9>
- chore: Better keybindings

common/.config/nvim/lua/plugins/ai.lua

@@ -1,3 +1,24 @@
 return {
-    -- TODO: Use similar keymaps to Windsurf
+    -- codeium
+    {
+        "Exafunction/codeium.nvim",
+        cond = require("config.util").is_not_vscode(),
+        cmd = "Codeium",
+        build = ":Codeium Auth",
+        event = "InsertEnter",
+        opts = {
+            enable_cmp_source = vim.g.ai_cmp,
+            virtual_text = {
+                enabled = not vim.g.ai_cmp,
+                key_bindings = {
+                    accept = false, -- handled by nvim-cmp / blink.cmp
+                    next = "<M-]>",
+                    prev = "<M-[>",
+                },
+            },
+        },
+        config = function()
+            require("codeium").setup({})
+        end,
+    },
 }