Now uses:
* ipld direct_by_leaf StateDB for basic queries
* trie_by_cid StateDB for trie slice and proof queries
Also:
* vulcanize => cerc refactor
* Backend method to close dbs
* state tests are in multiple packages, to allow separate ginkgo suites
* removes gap-filler module
* integration tests and github workflows
* run stack-orchestrator for testnet
* fix various issues with tests, hardhat server, dockerfile
* fix cmd flags / env vars
* fix flaky tests and clean up code
* remove unused code, scripts
* remove outdated docs
* update version
* cerc refactor waiting on unpublished dependencies
* cerc refactor updates for dependencies
* Describe imports got removed
* cleaning up more vulcanize refs in ci/cd
* another test lost Describe imports
* another test lost Describe imports... not caught in go build -a???
* more cerc-io migrations to utilize new git.vdb.to gitea instance
* switching back to github for running unit test
* first try at git.vdb.to as conatiner repository
* targeted tag was incomplete
* Update queries to fetch data from cids tables
* Fix eth_getTransactionByHash to return tx from canonical block
* Fetch transaction by hash in a single query
* Update queries to fetch data from IPLD blocks table
* Avoid NULL result from canonical block hash query
* Update GitHub workflow and script to run unit tests
* Avoid usage of LIMIT 1 in queries for GQL API
* Fetch IPLD data separately when retrieving latest account data or storage value
* Upgrade geth dependency
* Update GitHub workflow
