Remove duplicated garnet-server version

[Meir017]

Feature request type

enhancement

Is your feature request related to a problem? Please describe

The version of the garnet-server component is duplicated in 3 locations

I think we should reduce this to be defined in a single location and have the other location reference this value.

See an example commit 0ab8af6

Describe the solution you'd like

I think the only location that should define this value is the main/GarnetServer/GarnetServer.csproj file.

Then to allow the code at libs/host/GarnetServer.cs to reference this we could use something similar to https://stackoverflow.com/a/49537163/7025656 and expose an assembly-level attribute to the code through msbuild properties.

For .azure/pipelines/azure-pipelines-external-release.yml we could leverage the command ##vso[build.updatebuildnumber]build number through a powershell script that will read the msbuild property and modify the build's name

Describe alternatives you've considered

No response

Additional context

No response