Auto reshim

[jiz4oh]

Is your feature request related to a problem? Please describe.
no

Describe the solution you'd like
we must reshim manually by self

Describe alternatives you've considered
reshim should occur automatically whenever possible.

Additional context
there are two implements can be referenced

• https://github.com/asdf-community/asdf-python/blob/master/shims/pip
• https://github.com/asdf-vm/asdf-nodejs/blob/master/shims/npm