[Feature]: Block observer event loop skeleton

[netrome]

Feature - Block observer event loop skeleton

1. Description

We have a skeleton for the full operation of the block observer event loop which uses the bitcoin and stacks interface, together with the block notifier interface to populate the database with new blocks. There should be placeholder logic to run extraction functions to extract relevant information (deposit requests, withdraw requests etc.) from the observed blocks and populate the database with the extracted info.

2.1 Acceptance Criteria:

• The block observer event loop is defined, tested and supports being extended to perform all intended operations of the block observer.