chore: update project docs

[itsacoyote]

• Adds a collection of markdown documents to add to our Community Standards.

  • Code of Conduct doc
  • Contributing doc for getting started
  • Add cute little tags to the README
  • Add a Support doc to help users in getting support

• Adds templates for Issues that use the Issue forms format

  • Bug Report issue template for reporting bugs with guides
  • Feature Report issue template for requesting new features

• Modify the Pull Request template. Simplifies the form and also adds in some additional descriptions for the user to read before submitting.

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 2593b26):

https://zksync-sdk-docs-staging--pr26-update-project-docs-iw6xyfku.web.app

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