feat: improve detect-child-process rule

[ota-meshi]

close #104

This PR improves the detect-child-process rule with the following changes:

• Changed to check module imports as well.
• Changed to check import of node:child_process.
• Changed to report immediate calls like require('child_process').exec(c).
• Changed to report exec(c) calls with destructuring.
• Changed to not report traceable require('child_process').

[nzakas]

LGTM. Thanks!