Introducing rosetta-geth-sdk

What's Changed

• Add sdk source code by @xiaying-peng in #1
• more updates by @shrimalmadhur in #2
• test heimdall with codeflow by @shrimalmadhur in #7
• [fix] change master to main by @shrimalmadhur in #8
• [chore] update geth by @shrimalmadhur in #6
• revert main to master by @shrimalmadhur in #11

New Contributors

• @xiaying-peng made their first contribution in #1
• @shrimalmadhur made their first contribution in #2

Full Changelog: https://github.com/coinbase/rosetta-geth-sdk/commits/v0.0.1