Return the floor if available on iOS

[mvanbeusekom]

✨ What kind of change does this PR introduce? (Bug fix, feature, docs update...)

Feature

⤵️ What is the current behavior?

iOS has the option to return the floor on which the device is located when this is supported by the WiFi network. At the moment this information is not returned by the Geolocator.

🆕 What is the new behavior (if this is a feature change)?

The geolocator will now return the floor as part of the Position object when requesting location information when this information is available (only on iOS and only if the information is available, otherwise it will return null).

💥 Does this PR introduce a breaking change?

No

🐛 Recommendations for testing

📝 Links to relevant issues/docs

• Fixes Add support for floor indication (iOS only) #562

🤔 Checklist before submitting

• All projects build
• Follows style guide lines (code style guide)
• Relevant documentation was updated
• Rebased onto current develop

[codecov]

Codecov Report

Merging #576 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #576   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           15        15           
  Lines          257       257           
=========================================
  Hits           257       257           

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