Improve ESP32 Wifi scan

[josesimoes]

Description

• Rework Network_Interface_Start_Scan to return detailed success/error code.
• Update caller accordingly.
• Processing the return codes on the call stack was being oversimplified. This is now improved with different exceptions being thrown depending on the cause of failure to execute the scan.
• If needed this can be further improved by adding a WifiScanException or equivalent which could transmit an error code reporting exactly what was the failure.

Motivation and Context

• Improve feedback on failure to help pinpoint the cause.
• Somewhat addresses Exception with WiFi ScanAsync Home#1166.

How Has This Been Tested?

• Running the scan wifi sample.

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue with code or algorithm)
• New feature (non-breaking change which adds functionality to code)
• Breaking change (fix or feature that would cause existing functionality to change)
• Config and build (change in the configuration and build system, has no impact on code or features)
• Dev Containers (changes related with Dev Containers, has no impact on code or features)
• Dependencies (update dependencies and changes associated, has no impact on code or features)
• Documentation (changes or updates in the documentation, has no impact on code or features)

Checklist

• My code follows the code style of this project (only if there are changes in source code).
• My changes require an update to the documentation (there are changes that require the docs website to be updated).
• I have updated the documentation accordingly (the changes require an update on the docs in this repo).
• I have read the CONTRIBUTING document.
• I have tested everything locally and all new and existing tests passed (only if there are changes in source code).