feat(node): Support executing npm package lifecycle scripts (preinstall/install/postinstall) (#24487)

Adds support for running npm package lifecycle scripts, opted into via a
new `--allow-scripts` flag.

With this PR, when running `deno cache` (or `DENO_FUTURE=1 deno
install`) you can specify the `--allow-scripts=pkg1,pkg2` flag to run
lifecycle scripts attached to the given packages.

Note at the moment this only works when `nodeModulesDir` is true (using
the local resolver).

When a package with un-run lifecycle scripts is encountered, we emit a
warning suggesting things may not work and to try running lifecycle
scripts. Additionally, if a package script implicitly requires
`node-gyp` and it's not found on the system, we emit a warning.

Extra things in this PR:
- Extracted out bits of `task.rs` into a separate module for reuse
- Added a couple fields to `process.config` in order to support
`node-gyp` (it relies on a few variables being there)
- Drive by fix to downloading new npm packages to test registry

---

TODO:
- [x] validation for allow-scripts args (make sure it looks like an npm
package)
- [x] make allow-scripts matching smarter
- [ ] figure out what issues this closes

---
Review notes:
- This adds a bunch of deps to our test registry due to using
`node-gyp`, so it's pretty noisy

2 files changed, 7 insertions, 1 deletions

diff --git a/tests/util/server/src/npm.rs b/tests/util/server/src/npm.rs
index e7d8d96ab..f1c341738 100644
--- a/tests/util/server/src/npm.rs
+++ b/tests/util/server/src/npm.rs
@@ -110,7 +110,12 @@ impl TestNpmRegistry {
   }
 
   pub fn package_url(&self, package_name: &str) -> String {
-    format!("http://{}/{}/", self.hostname, package_name)
+    let scheme = if self.hostname.starts_with("http://") {
+      ""
+    } else {
+      "http://"
+    };
+    format!("{}{}/{}/", scheme, self.hostname, package_name)
   }
 
   fn get_package_property<TResult>(
diff --git a/tests/util/server/src/servers/npm_registry.rs b/tests/util/server/src/servers/npm_registry.rs
index 7e5547b5b..f19fa5d92 100644
--- a/tests/util/server/src/servers/npm_registry.rs
+++ b/tests/util/server/src/servers/npm_registry.rs
@@ -297,6 +297,7 @@ async fn download_npm_registry_file(
   testdata_file_path: &PathBuf,
   is_tarball: bool,
 ) -> Result<(), anyhow::Error> {
+  let uri_path = uri_path.trim_start_matches('/');
   let url_parts = uri_path.split('/').collect::<Vec<_>>();
   let package_name = if url_parts[0].starts_with('@') {
     url_parts.into_iter().take(2).collect::<Vec<_>>().join("/")