Baseline with network and NTP working

This version is stable and can be considered as a baseline for custom development.
Next ones will only suite my own needs to control my smart home.

• WiFi added : caution, SSID/Password is hardcoded, by choice.
• GUI is dynamically changed as per external activities (Networking, ...)
• NTP working

Wake up stabilised

• LVGL objects externalised
• events loop totally redesigned (correcting watch hanging due to wrist movement)
• wrist's wake can be disabled

Make the main tile fully draggable

Stable release before network implementation

v0.0506

• Status tile
• Step counter can be reset

Clean baseline

Code totally reviewed

Only statusbar, time and date are working.

Time / date & status bar working in POO way

• battery saving improved
• status bar working
• move to full OOP mode
• bug correction

Time & date working

Only the time and the date are displayed