feat(lang): add opentofu support

lua/lazyvim/plugins/extras/lang/opentofu.lua

@@ -0,0 +1,57 @@
+vim.filetype.add({
+  extension = {
+    tofu = "opentofu",
+  },
+})
+
+return {
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = function(_, opts)
+      opts.ensure_installed = opts.ensure_installed or {}
+      vim.list_extend(opts.ensure_installed, { "terraform", "hcl" })
+      vim.treesitter.language.register("opentofu", "hcl")
+    end,
+  },
+  {
+    "neovim/nvim-lspconfig",
+    opts = {
+      servers = {
+        tofu_ls = {},
+      },
+    },
+  },
+  {
+    "mason-org/mason.nvim",
+    opts = { ensure_installed = { "tofu-ls" } },
+  },
+  {
+    "nvimtools/none-ls.nvim",
+    optional = true,
+    opts = function(_, opts)
+      local null_ls = require("null-ls")
+      opts.sources = vim.list_extend(opts.sources or {}, {
+        null_ls.builtins.formatting.opentofu_fmt,
+        null_ls.builtins.diagnostics.opentofu_validate,
+      })
+    end,
+  },
+  {
+    "mfussenegger/nvim-lint",
+    optional = true,
+    opts = {
+      linters_by_ft = {
+        opentofu = { "tofu" },
+      },
+    },
+  },
+  {
+    "stevearc/conform.nvim",
+    optional = true,
+    opts = {
+      formatters_by_ft = {
+        opentofu = { "tofu_fmt" },
+      },
+    },
+  },
+}