feat(pack): add oxlint pack

lua/astrocommunity/pack/oxlint/README.md

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+# Oxlint
+
+[Oxlint](https://oxc.rs/) is designed to catch erroneous or useless code without requiring any configurations by default.

lua/astrocommunity/pack/oxlint/init.lua

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+return {
+  {
+    "williamboman/mason-lspconfig.nvim",
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "oxlint" })
+    end,
+  },
+  {
+    "WhoIsSethDaniel/mason-tool-installer.nvim",
+    optional = true,
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "oxlint" })
+    end,
+  },
+  {
+    "jay-babu/mason-null-ls.nvim",
+    optional = true,
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "oxlint" })
+    end,
+  },
+  {
+    "stevearc/conform.nvim",
+    optional = true,
+    opts = function(_, opts)
+      if not opts.formatters_by_ft then opts.formatters_by_ft = {} end
+      -- https://oxc.rs/docs/guide/usage/linter.html
+      local supported_ft = {
+        "javascript",
+        "typescript",
+        "javascriptreact",
+        "typescriptreact",
+        "astro",
+        "svelte",
+        "vue",
+      }
+      for _, ft in ipairs(supported_ft) do
+        opts.formatters_by_ft[ft] = { "oxlint" }
+      end
+    end,
+  },
+}