Increase default chain shutdown timeout (ava-labs#1220)

Simplify proposerVM indexer (ava-labs#1185)

Fixed minor style errors

fixing an issue where github runners fill up on /tmp (ava-labs#1081)

README: Clarify minimum macOS version

bumped coreth version

Remove "vms/components/core" Package (ava-labs#1011)

bumped coreth version

added clarification comment

Add height to bootstrapping block job execution log