Add type hints to plugin options where possible

This could help beginners to get autocompletion, catch mistakes earlier,
and allow them to skip the docs for simple configs.

This is not perfect because a lot of the plugins type all of their keys
as required, even though they have defaults, but this is good enough.

init.lua

@@ -273,13 +273,16 @@ require('lazy').setup({
   -- See `:help gitsigns` to understand what the configuration keys do
   { -- Adds git related signs to the gutter, as well as utilities for managing changes
     'lewis6991/gitsigns.nvim',
+    ---@module 'gitsigns'
+    ---@type Gitsigns.Config
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       signs = {
-        add = { text = '+' },
-        change = { text = '~' },
-        delete = { text = '_' },
-        topdelete = { text = '‾' },
-        changedelete = { text = '~' },
+        add = { text = '+' }, ---@diagnostic disable-line: missing-fields
+        change = { text = '~' }, ---@diagnostic disable-line: missing-fields
+        delete = { text = '_' }, ---@diagnostic disable-line: missing-fields
+        topdelete = { text = '‾' }, ---@diagnostic disable-line: missing-fields
+        changedelete = { text = '~' }, ---@diagnostic disable-line: missing-fields
       },
     },
   },
@@ -301,6 +304,9 @@ require('lazy').setup({
   { -- Useful plugin to show you pending keybinds.
     'folke/which-key.nvim',
     event = 'VimEnter', -- Sets the loading event to 'VimEnter'
+    ---@module 'which-key'
+    ---@type wk.Opts
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       -- delay between pressing a key and opening which-key (milliseconds)
       -- this setting is independent of vim.o.timeoutlen
@@ -468,6 +474,9 @@ require('lazy').setup({
     -- used for completion, annotations and signatures of Neovim apis
     'folke/lazydev.nvim',
     ft = 'lua',
+    ---@module 'lazydev'
+    ---@type lazydev.Config
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       library = {
         -- Load luvit types when the `vim.uv` word is found
@@ -482,7 +491,13 @@ require('lazy').setup({
       -- Automatically install LSPs and related tools to stdpath for Neovim
       -- Mason must be loaded before its dependents so we need to set it up here.
       -- NOTE: `opts = {}` is the same as calling `require('mason').setup({})`
-      { 'mason-org/mason.nvim', opts = {} },
+      {
+        'mason-org/mason.nvim',
+        ---@module 'mason.settings'
+        ---@type MasonSettings
+        ---@diagnostic disable-next-line: missing-fields
+        opts = {},
+      },
       'mason-org/mason-lspconfig.nvim',
       'WhoIsSethDaniel/mason-tool-installer.nvim',
 
@@ -750,6 +765,8 @@ require('lazy').setup({
         desc = '[F]ormat buffer',
       },
     },
+    ---@module 'conform'
+    ---@type conform.setupOpts
     opts = {
       notify_on_error = false,
       format_on_save = function(bufnr)
@@ -810,8 +827,8 @@ require('lazy').setup({
       },
       'folke/lazydev.nvim',
     },
-    --- @module 'blink.cmp'
-    --- @type blink.cmp.Config
+    ---@module 'blink.cmp'
+    ---@type blink.cmp.Config
     opts = {
       keymap = {
         -- 'default' (recommended) for mappings similar to built-in completions
@@ -899,7 +916,15 @@ require('lazy').setup({
   },
 
   -- Highlight todo, notes, etc in comments
-  { 'folke/todo-comments.nvim', event = 'VimEnter', dependencies = { 'nvim-lua/plenary.nvim' }, opts = { signs = false } },
+  {
+    'folke/todo-comments.nvim',
+    event = 'VimEnter',
+    dependencies = { 'nvim-lua/plenary.nvim' },
+    ---@module 'todo-comments'
+    ---@type TodoOptions
+    ---@diagnostic disable-next-line: missing-fields
+    opts = { signs = false },
+  },
 
   { -- Collection of various small independent plugins/modules
     'echasnovski/mini.nvim',
@@ -943,6 +968,9 @@ require('lazy').setup({
     build = ':TSUpdate',
     main = 'nvim-treesitter.configs', -- Sets main module to use for opts
     -- [[ Configure Treesitter ]] See `:help nvim-treesitter`
+    ---@module 'nvim-treesitter.configs'
+    ---@type TSConfig
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       ensure_installed = { 'bash', 'c', 'diff', 'html', 'lua', 'luadoc', 'markdown', 'markdown_inline', 'query', 'vim', 'vimdoc' },
       -- Autoinstall languages that are not installed
@@ -990,7 +1018,7 @@ require('lazy').setup({
   -- Or use telescope!
   -- In normal mode type `<space>sh` then write `lazy.nvim-plugin`
   -- you can continue same window with `<space>sr` which resumes last telescope search
-}, {
+}, { ---@diagnostic disable-line: missing-fields
   ui = {
     -- If you are using a Nerd Font: set icons to an empty table which will use the
     -- default lazy.nvim defined Nerd Font icons, otherwise define a unicode icons table