`pkgmgr_install` with `proxy` or `registry` options

[yssource]

https://registry.npmjs.org/ is blocked in some countries, which causes the following failure when running R2PM_OFFLINE=1 r2pm -r src/r2frida-compile -i || src/r2frida-compile -i

Install failed: Failed to GET https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.7.0.tgz: Error resolving ?registry.npmjs.org?: Temporary failure in name resolution.

Could you support a proxy option for pkgmgr_search or pkgmgr_install?

It could be helpful, if it works as npm install --registry=https://registry.npm.taobao.org.

Very appreciated.

[trufae]

You can run the precompiled target which judt download s the agent.h from the release page instead of compiling it