feat(linting): add golangci-lint

A fast Go linters aggregator for Gophers.

lua/lazyvim/plugins/extras/linting/golangci-lint.lua

@@ -0,0 +1,31 @@
+return {
+  {
+    "mason.nvim",
+    opts = function(_, opts)
+      vim.list_extend(opts.ensure_installed, {
+        "golangci-lint",
+      })
+    end,
+  },
+
+  {
+    "mfussenegger/nvim-lint",
+    optional = true,
+    opts = {
+      linters_by_ft = {
+        go = { "golangcilint" },
+      },
+    },
+  },
+
+  {
+    "nvimtools/none-ls.nvim",
+    optional = true,
+    opts = function(_, opts)
+      local nls = require("null-ls")
+      opts.sources = vim.list_extend(opts.sources or {}, {
+        nls.builtins.diagnostics.golangci_lint,
+      })
+    end,
+  },
+}