Reflect GitHub README changes

[ArtemkaKun]

Describe the feature

If VPM module is using README from GitHub, GitHub version of it can be easily changed, and VPM module's README should automatically be updated as well.

Use Case

VPM module data is always up to date.

Proposed Solution

Ask user for GitHub webhook when creating a VPM module as Deno does.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Version used

unrelated

Environment details (OS name and version, etc.)

unrelated