* Add unknown guardian set index alert
* Add prometheus metrics to check if exists observations without txhash
* Add max sequence cache error prometheus metrics
* init contract-watcher
* Add processor and blockain watchers
* Add pagination and save last blocknumber procesed by chain
* Add processing by blocks
* Add contract-watcher deploy manifest
* Add endpoint to get globalTransactions by Id
* Add originTX to get globalTransactionById endpoint
* Add wait time for new blocks
* Add initial block for evm watcher
* Add rate limit for evm watcher
* Handle testnet environment and small fixes
* Update wormhole dependencies
* Fix api documentation for swagger
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Co-authored-by: Agustin Pazos <agpazos85@gmail.com>
### Summary
Before this PR, when validating a VAA, we were always using the latest guardian set index to verify the signatures.
With this PR, we're making the signature verification against `vaa.guardianSetIndex` instead.
Context: https://github.com/wormhole-foundation/wormhole-explorer/issues/104
### Testing plan
* Added unit test cases
* Also tested manually
walker-16
ftocal
agodnic