Updated main examples README to add missing examples folders and Getting Started links
Updated wifi/fastscan example README
Updated wifi examples README
Updated wifi main examples README
Added instructions and removed obviousness from examples README
Updates on example README in peripherals, system and wifi
Updates on example README in peripherals and added wave form pictures on wave_gen example
Updates and review on example README
Revision on unit style convention
Added the getting started link for each supported version
Readme review and recommended enhancements
Added the default note on the wave form option info
Added the ESP32-C3 support information on the temperature sensor example README
Added Getting Started information for ESP32-S2 and ESP32-C3
Issue fixed on the supported target on README
Resolved merge conflict
