v2.10: add Waveshare 2-channel hat

Merged from test branch then updates version and timestamp

v2.9: display main menu after all actions

Some actions produce lengthy console interaction and the main selection list is lost. This change displays the choices after all actions

v2.8: add prompt for overlay install

Config.txt conflicts can sometimes exist when adding DT overlay lines. The setup script now asks if manual editing of config.txt is desired.

Also added indication of missing overlays when reporting status

v2.7

fixed bug when no can ports are defined

v2.6: updated PiCAN overlay

Per Rob Duthie:
Re canbus PiCan file to make it more stable i added the spi Frequency command below: Can you update your VeCanSetup file.
I had issues with data comming in the number were all over the place, by adding in the spi frequency the numbers are rock solid now.

v2.5

for v2.80 and beyond, use templates supplied with VenusOS

v2.4

Added Waveshare 12Mhz

v2.2: changed service handling

all services are installed as part of the OS starting with v2.80~10. Checks are now made to prevent overwriting the service directories.

Also, canbus services are no longer removed, again to prevent conflicts with what is included with Venus OS

v2.1: switch to new services location

as of v2.80~10, services were relocated to /opt/victronenergy/services

v2.0

bump timeStamp to trigger auto updates