Use netlink instead of Wireless Extensions

[Caellian]

This PR removes deprecated iwlib related code and replaces it with netlink library.

State

• [x] change/setup dependencies
  • update CI & Docker files
• [x] implement some basic code that can handle some of the existing stats
  • [ ] dispatch new requests when requests aren't in_flight already
• [x] simplify changes for future contributors
  • [ ] improve documentation
• [ ] reduce diff

Testing

• [x] nl cache works
• [ ] test commands
  • wireless_ap
  • wireless_bitrate
  • wireless_channel
  • wireless_essid
  • wireless_freq
  • wireless_link_qual
  • wireless_link_qual_max
  • wireless_mode
• [ ] test default command values
• [ ] ensure correct interface data is returned
• [ ] ensure correct network info is returned
• [ ] check delay between command issuing and finish callback to determine ideal handling (eager vs. lazy)
• [ ] test what happens when conky only renders once

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[Caellian]

Ok, got interface information to update, so this PR is ~70% done with regards to figuring stuff out: