Refactors the build-docker GitHub Actions workflow to build and push Docker images for both amd64 and arm64 architectures using a matrix strategy. Adds a manifest job to create and push a multi-arch manifest for the lthn/chain image, supporting both 'testnet' and 'latest' tags based on input.
Changed build commands and artifact directories in macOS and Windows GitHub Actions workflows to use new target names and paths. Removed 'connectivity_tool' from CLI artifacts.
Renamed and reorganized CMake build profiles for consistency, removing unused Android, iOS, and MinGW profiles. Updated GitHub Actions workflows and Makefile to use new profile names and increased build parallelism for faster builds.
