shibarium: add bone fork build-from-source assets

- Update heimdall init.sh with heimdall-109 chain_id and mainnet seeds
- Update cometbft.Dockerfile with v1.0.7-bone version
- Add bor.Dockerfile for building shibaone/bor from source at v1.3.9-bone

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

shibarium/cometbft.Dockerfile

@@ -10,7 +10,7 @@
 # the node before exec'ing heimdalld start.
 
 ARG CL_IMAGE=shibaone/heimdall
-ARG CL_VERSION=TODO_VERIFY_VERSION
+ARG CL_VERSION=v1.0.7-bone
 
 FROM ${CL_IMAGE}:${CL_VERSION}