Feature: Allow for searching with Yara

[rjzak]

Allow users to search through the collections using Yara.

• Use yara_x
• User submits a rule:
  • Validate rule
  • Generate a uuid and store the rule
  • Separate thread checks contents against rules, updates the database with results
  • User can query for results later
  • Delete results from database after some time period, maybe 24 hours
  • Limit number of results, maybe 1000.