feat(extra): add yaml language extension (#1198)

* feat: add yaml language extension

* fix(yaml): disable keyOrdering checks

---------

Co-authored-by: Folke Lemaitre <folke.lemaitre@gmail.com>

lua/lazyvim/plugins/extras/lang/yaml.lua

@@ -0,0 +1,48 @@
+return {
+
+  -- add yaml specific modules to treesitter
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = function(_, opts)
+      if type(opts.ensure_installed) == "table" then
+        vim.list_extend(opts.ensure_installed, { "yaml" })
+      end
+    end,
+  },
+
+  -- correctly setup lspconfig
+  {
+    "neovim/nvim-lspconfig",
+    dependencies = {
+      "b0o/SchemaStore.nvim",
+      version = false, -- last release is way too old
+    },
+    opts = {
+      -- make sure mason installs the server
+      servers = {
+        yamlls = {
+          -- lazy-load schemastore when needed
+          on_new_config = function(new_config)
+            new_config.settings.yaml.schemas = new_config.settings.yaml.schemas or {}
+            vim.list_extend(new_config.settings.yaml.schemas, require("schemastore").yaml.schemas())
+          end,
+          settings = {
+            redhat = { telemetry = { enabled = false } },
+            yaml = {
+              keyOrdering = false,
+              format = {
+                enable = true,
+              },
+              validate = { enable = true },
+              schemaStore = {
+                -- Must disable built-in schemaStore support to use
+                -- schemas from SchemaStore.nvim plugin
+                enable = false,
+              },
+            },
+          },
+        },
+      },
+    },
+  },
+}