feat(pack): add json language pack

lua/astrocommunity/pack/json/README.md

@@ -0,0 +1,6 @@
+# JSON Language Pack
+
+This plugin pack does the following:
+
+- Adds `json` and `jsonc` Treesitter parsers
+- Adds `jsonls` language server

lua/astrocommunity/pack/json/json.lua

@@ -0,0 +1,22 @@
+return {
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = function(_, opts)
+      -- Ensure that opts.ensure_installed exists and is a table or string "all".
+      if not opts.ensure_installed then
+        opts.ensure_installed = {}
+      elseif opts.ensure_installed == "all" then
+        return
+      end
+      vim.list_extend(opts.ensure_installed, { "json", "jsonc" })
+    end,
+  },
+  {
+    "williamboman/mason-lspconfig.nvim",
+    opts = function(_, opts)
+      -- Ensure that opts.ensure_installed exists and is a table
+      if not opts.ensure_installed then opts.ensure_installed = {} end
+      table.insert(opts.ensure_installed, "jsonls")
+    end,
+  },
+}