New Module: Clearbit (Domain --> Company Name)

[TheTechromancer]

We should have a module that ingests all the domains in the scan and categorizes them into business units, similar to how Xpanse does with vulnerabilities:

Here is a short example of what this might look like:

class Clearbit(BaseModule):
    watched_events = ["DNS_NAME"]
    produced_events = ["BUSINESS_UNIT"]
    per_domain_only = True
    # api key options

    async def setup(self):
        # set up API key
    
    async def handle_event(self, event):
        _, domain = self.helpers.split_domain(event.data)
        # get company name from the clearbit API and keep a running list of domains per company name

    async def report(self):
        # at the end of the scan, emit all the business units with their domains