feat(nvim): use lsp anticonceal inlay hints

Lets fucking gooooooo!

dots/.config/nvim/lua/plugins/configs/kanagawa.lua

@@ -131,6 +131,7 @@ require("kanagawa").setup({
             DiffviewFilePanelTitle = { fg = colors.crystalBlue },
             Headline = { bg = colors.sumiInk2 },
             HeadlineReversed = { bg = colors.sumiInk1 },
+            LspInlayHint = { fg = colors.lotusViolet1, bg = colors.sumiInk5, italic = true },
         }
 
         return overrides

dots/.config/nvim/lua/plugins/configs/lsp.lua

@@ -40,7 +40,7 @@ local rustopts = {
         inlay_hints = {
             -- automatically set inlay hints (type hints)
             -- default: true
-            auto = true,
+            auto = false,
             -- Only show inlay hints for the current line
             only_current_line = false,
             -- whether to show parameter hints with the inlay hints or not

dots/.config/nvim/lua/plugins/plugins.lua

@@ -168,6 +168,32 @@ lazy.setup({
         end,
     },
 
+    -- Inlay hints for LSP
+    {
+        "lvimuser/lsp-inlayhints.nvim",
+        branch = "anticonceal",
+        config = function()
+            require("lsp-inlayhints").setup({
+                inlay_hints = {
+                    highlight = "LspInlayHint"
+                }
+            })
+            vim.api.nvim_create_augroup("LspAttach_inlayhints", {})
+            vim.api.nvim_create_autocmd("LspAttach", {
+                group = "LspAttach_inlayhints",
+                callback = function(args)
+                    if not (args.data and args.data.client_id) then
+                        return
+                    end
+
+                    local bufnr = args.buf
+                    local client = vim.lsp.get_client_by_id(args.data.client_id)
+                    require("lsp-inlayhints").on_attach(client, bufnr)
+                end,
+            })
+        end,
+    },
+
     -- Show code actions
     {
         "kosayoda/nvim-lightbulb",