Update code to follow changes to GarminConnectClient API changes

0.2.1

Add changes due to GarminConnectClient API changes

Update to net6 and fix Cloudflare error 1020 on linux

Upgrade to net6.0

To solve Cloudflare not allowing connection on linux GarminConnectClient
had to be upgraded to net6.0.
Fix code coverage generation.
Remove Fit processorArchitecture info from csproj files.

Initial test release in a NuGet package

Make the project nuget packable

Add project related metadata and tags necessary for proper packaging.