Add release notes on Github

[abhi21git]

Is your feature request related to a problem? Please describe.
When I open github or XCode's package manager, I am not able to see whats new.

Describe the solution you'd like
Simple copy and paste the release notes from here to release notes of github.

Describe alternatives you've considered
A release notes link can be added with each release.

Additional context
NA

[wangela]

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@abhi21git Thank you for opening this issue. 🙏
Please check out these other resources that might help you get to a resolution in the meantime:

• Check the issue tracker - bugs and feature requests for Google Maps Platform APIs and SDKs
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• Discord - chat with other developers
• StackOverflow - use the google-maps tag

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