Add Mikrotik sensors

[slackr31337]

Dependent on RP #25576 (New Mikrotik Hub)

Description:

New Mikrotik device sensors to display device metrics like CPU load, Memory free, Disk free, WAN upload and download bandwidth utilization.

Example entry for configuration.yaml (if applicable):

mikrotik:
  - host: 192.168.88.1
    username: !secret router_user
    password: !secret router_pass
    ssl: true
    track_devices: false
    wan_port: ether1
    sensors:
      - sysinfo
      - cpu
      - memory
      - disk
      - upload_speed
      - download_speed

  - host: 192.168.88.2
    username: !secret capsman_user
    password: !secret capsman_pass
    ssl: true
    track_devices: true
    wan_port: spf1
    sensors:
      - sysinfo
      - cpu
      - memory
      - disk
      - upload_speed
      - download_speed

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly. Update and include derived files by running python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.

[slackr31337]

Closing this PR to create a new one after creating a new fork