feat: Add `deno serve` subcommand (#23511)

By default, `deno serve` will assign port 8000 (like `Deno.serve`).
Users may choose a different port using `--port`.

`deno serve /tmp/file.ts`

`server.ts`:
```ts
export default {
  fetch(req) {
    return new Response("hello world!\n");
  },
};
```

1 files changed, 3 insertions, 0 deletions

diff --git a/cli/factory.rs b/cli/factory.rs
index 1a0584eea..bfaf96f39 100644
--- a/cli/factory.rs
+++ b/cli/factory.rs
@@ -219,6 +219,7 @@ impl CliFactory {
       // Warm up the caches we know we'll likely need based on the CLI mode
       match self.options.sub_command() {
         DenoSubcommand::Run(_)
+        | DenoSubcommand::Serve(_)
         | DenoSubcommand::Bench(_)
         | DenoSubcommand::Test(_)
         | DenoSubcommand::Check(_) => {
@@ -816,6 +817,8 @@ impl CliFactory {
       self.feature_checker().clone(),
       self.create_cli_main_worker_options()?,
       self.options.node_ipc_fd(),
+      self.options.serve_port(),
+      self.options.serve_host(),
       self.options.enable_future_features(),
       // TODO(bartlomieju): temporarily disabled
       // self.options.disable_deprecated_api_warning,