Updating changelog with release information

CHANGELOG.md

@@ -1,7 +1,15 @@
 # Coinbase Go SDK Changelog
 
-## [TBD] - TBD
+## [0.0.1] - 2024-08-23
 
 ### Added
 
--
+Initial release of the Coinbase Go SDK
+
+- Support for Staking on External Wallets 
+    - Full support for Shared ETH Staking
+    - Partial support for Dedicated ETH Staking 
+      - Only stake is supported, unstake will be coming soon
+    - On networks `holesky` and `mainnet`
+- Support for getting stakeable balances on External Wallets
+- Support for Listing Rewards on External Wallets