feat: Sequence Sender & Aggregator

[ToniRamirezM]

Description

• Adds Sequence Sender
• Adds Aggregator
• Disables several linter rules

This is just a first iteration to get the base code into the repo. Further iterations will be needed.

[vcastellm]

We should evaluate if we need to create a log package for wrapping the log dependency

[vcastellm]

This is the list that I obtained if things we want to change:

• Remove smartcontracts from etherman and rely on the repo
• Move the db dir to aggregator?
• Remove the state package as it's a DB abstraction on top of a single datastore and move to a KV based interface for each component
• Does the log package makes sense? Looks like there's a pattern here, I think we can use an interface to define a single logger and pass it to multiple components, reducing deps.
• Looks like the DS dependency on sequence-sender depends on types declared in the state package

Aside from this some of the comments I think worth fixing before merging, wdyt?

[sonarcloud]

Quality Gate failed

Failed conditions
2 Security Hotspots
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[vcastellm]