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* remove outdated docs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* cerc refactor waiting on unpublished dependencies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
* Use groupcache pool for state db access
* Group cache config and logging stats on timer
* Integrate state validator into server
* Use tagged ipfs-ethdb
* groupcache config for tests
* Work around duplicate registration of groupcache error in tests
* Use tagged version of eth-ipfs-state-validator
* State validation command.
* Validator for static replicas to keep cache warm
* Update docker go-version and go.mod.
* Address comments and self review.
* Fix ipfs-ethdb version.
Co-authored-by: Arijit Das <arijitad.in@gmail.com>
