* Generate default derived state for Mapping type variables
* Update IPLDBlock in storage methods instead of using a private class variable
* Default state flag for indexer storage methods
* Helper functions to update state objects
* Add checkpoint flag in Contract table and corresponding changes in existing watchers
* Update codegen docs
* Add examples to generated docs
* Turn default state off by default
* Make state parameter to indexer storage methods default to none
* Add method to get prev. state in indexer
* Subscribe to hooks queue in existing watchers
* Change naming strategy for generated get and save functions
* Push checkpointing job after post-block hook job completed
* Using hooks status to ensure their chronological execution
* Add default indices to IPLDBlock table
* Add kind parameter to getState GQL API
* Add checkpoint CLI
* Add blockHash arg to checkpoint CLI and update codegen docs
* Print out block hash for checkpoint CLI
* Use log from debug for logging
* Filter using contract at start in hierarchical query
* Make kind argument to prepare IPLDBlock required
* Add ipld-blocks entity generation
* Populate ipld-blocks table
* Rename ipld-block entity and update after each event
* Move ipld-hook to hooks.ts
* Change IPLD block structure
* Add cid field in blocks
* Fetch prev. IPLDBlock for a contract
* GQL API to query IPLDBlock by CID
* Save cid in blocks in existing watchers
* Update codegen docs
* GQL API for getting last derived state (#3)
* GQL API for getting last derived state
* Rename query to getState
* Change query names to getState and getStateByCid
* Save BigInt as string
* Move function to prepare IPLDBlock to indexer
* Refactor IPLDBlock hook
* Add genesis hook
* Call post-block hook after a block is marked as complete
* Add IPLDBlock checkpointing
* Use queryRunner instead of a new repo for queries
* Add a query to get block in ipld-eth-client
* Get latest checkpoints for all contracts for checkpointing.
* Call post-block hook in a queue
* Pass server config to Indexer in watch-contract cli
Co-authored-by: nikugogoi <nabarun@deepstacksoft.com>
