Get EOS EVM Node Build job to succeed

[oschwaldp-oci]

Resolves: #15

Adds 2 jobs to node.yml workflow:

1. Discover Platforms - Makes use of AntelopeIO/discover-platforms-action to query platforms as described in .cicd/platforms.json coupled with docker file(s) in .cicd/platforms/* to see if base container images exist already to build in.
2. Build Platforms - If the described platforms from Discover Platforms job do not exist, build them and upload the artifacts for later reuse.

Updates to build dependencies in CICD:

• Ubuntu22 - (new version of silkworm requires cmake >=3.19.0 and Ubuntu 20.04 only comes with cmake 3.16.3)
• gcc-11
• g++11
• conan - version 1.60.2 (current conan config files do not support jump to conan 2.x)

Note: Build dependency installation is now done through the Dockerfile (e.g. ubuntu22.Dockerfile) instead of in the build-node.sh script.