Schematic improvements

[rhgndf]

• Changed to two LDOs and add ferrite beads. Datasheet
• MosFETs changed to AO3400A for lower Rds(on)
• Changed battery charging IC to pin compatible TP4054
• USB connector changed to more common variant
• Buzzer changed to something in stock at LCSC and lower cost.
• Antenna pad disconnected from ground. According to the longer datasheet, the other pad shouldn't be connected to anything: https://www.micros.com.pl/mediaserver/info-rf%20an1603-433.pdf

This should hopefully make it easier to do assembly on JLCPCB

[ManoDaSilva]

Hi!

Sorry for the time it took to review your PR, thanks for your time! Good catch on the antenna. As for the mosfet, regulator, usb c socket I really think it's worth applying your changes.

As for the buzzer, I specifically chose this model as I wanted to get something that also outputs the same way as the original swissphone's for future integration into the case. I do think this will be perfect though!