Replace excavate with YARA version, and introduce web_parameters

[liquidsec]

• [x] Rework Spider Danger / Spider Max
• [x] Get all old tests passing
• [x] Write tests for new functionality
• [x] Documentation for Yara features
• [ ] Clean up / refactoring

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.31079% with 106 lines in your changes missing coverage. Please review.

Project coverage is 92%. Comparing base (c6b462d) to head (12c9e24).

:exclamation: Current head 12c9e24 differs from pull request most recent head c284bd3

Please upload reports for the commit c284bd3 to get more accurate results.

Files	Patch %	Lines
bbot/modules/internal/excavate.py	86%	71 Missing :warning:
bbot/modules/paramminer_headers.py	72%	13 Missing :warning:
bbot/core/event/base.py	89%	7 Missing :warning:
bbot/core/helpers/diff.py	85%	3 Missing :warning:
bbot/core/helpers/misc.py	86%	3 Missing :warning:
...p_2/module_tests/test_module_paramminer_headers.py	93%	3 Missing :warning:
...2/module_tests/test_module_paramminer_getparams.py	97%	2 Missing :warning:
bbot/core/helpers/validators.py	96%	1 Missing :warning:
bbot/scanner/preset/args.py	67%	1 Missing :warning:
...t/test_step_2/module_tests/test_module_excavate.py	100%	1 Missing :warning:
... and 1 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## bbot-2.0 #1471 +/- ## ========================================= - Coverage 92% 92% -0% ========================================= Files 346 346 Lines 24070 24605 +535 ========================================= + Hits 22078 22567 +489 - Misses 1992 2038 +46 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.