feat(unstable): package manager (#20517)

Adds an experimental unstable built-in package manager to Deno, but it is
currently not usable because the registry infrastructure hasn't been
setup and it points to a non-existent url by default. The default
registry url can be configured via the `DENO_REGISTRY_URL` environment
variable.

1 files changed, 3 insertions, 0 deletions

diff --git a/cli/tests/testdata/jsr/deps/main.ts b/cli/tests/testdata/jsr/deps/main.ts
new file mode 100644
index 000000000..25b13a681
--- /dev/null
+++ b/cli/tests/testdata/jsr/deps/main.ts
@@ -0,0 +1,3 @@
+import value from "jsr:@denotest/deps/mod.ts";
+
+console.log(value);