Add dnsbimi module, resolve #1625

[colin-stubbs]

This PR adds a new module dnsbimi which inspects BIMI records for a default, or custom, set of BIMI selector DNS records which may exist under a target domain.

Refer to #1625 for more info about BIMI.

[TheTechromancer]

Since we are deduping by parent domain, this should probably also be set to the parent.

[TheTechromancer]

The default selectors should be in the default config, as an example for how to format the option. E.g.:

    options = {
        "emit_raw_dns_records": False,
        "emit_urls": True,
        "selectors": "default,email,mail,bimi",
    }

[colin-stubbs]

Yeap, fair, will add additional commit with this.

[codecov]

Codecov Report

Attention: Patch coverage is 90.17288% with 324 lines in your changes missing coverage. Please review.

Project coverage is 93%. Comparing base (db565b4) to head (796d633).
Report is 771 commits behind head on dev.

Files with missing lines	Patch %	Lines
bbot/core/helpers/depsinstaller/sudo_askpass.py	0%	29 Missing ⚠️
bbot/modules/subdomainradar.py	77%	27 Missing ⚠️
bbot/modules/trufflehog.py	58%	27 Missing ⚠️
bbot/modules/postman_download.py	88%	21 Missing ⚠️
bbot/core/helpers/depsinstaller/installer.py	56%	19 Missing ⚠️
bbot/core/engine.py	88%	18 Missing ⚠️
bbot/core/config/logger.py	15%	17 Missing ⚠️
bbot/modules/internal/excavate.py	85%	16 Missing ⚠️
bbot/modules/github_workflows.py	75%	13 Missing ⚠️
bbot/modules/google_playstore.py	79%	13 Missing ⚠️
... and 28 more

Additional details and impacted files

@@           Coverage Diff           @@
##             dev   #1965     +/-   ##
=======================================
- Coverage     93%     93%     -0%     
=======================================
  Files        341     365     +24     
  Lines      25772   27914   +2142     
=======================================
+ Hits       23788   25706   +1918     
- Misses      1984    2208    +224     

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