feat!(nvim): Migrate to v0.11 built-in lsp configs

tools/nvim/lsp/vimls.lua

@@ -0,0 +1,19 @@
+return {
+  cmd = { "vim-language-server", "--stdio" },
+  filetypes = { "vim" },
+  root_markers = { ".git" },
+  init_options = {
+    isNeovim = true,
+    iskeyword = "@,48-57,_,192-255,-#",
+    vimruntime = "",
+    runtimepath = "",
+    diagnostic = { enable = true },
+    indexes = {
+      runtimepath = true,
+      gap = 100,
+      count = 3,
+      projectRootPatterns = { "runtime", "nvim", ".git", "autoload", "plugin" },
+    },
+    suggest = { fromVimruntime = true, fromRuntimepath = true },
+  },
+}