Json rpc unit test

[taooceros]

Unit Test for JsonRPCPlugins

1. Check whether specific return string is parsed correctly
2. Check whether case is actually insensitive

[jjw24]

is this removal intended? we still specify compile include at line 48 of the core csproj file

[taooceros]

Let me check. I don't know why this is removed.

[jjw24]

very nice addition, we should add more tests in general.

for unit tests, could we follow the GivenWhenThen structure please:
https://martinfowler.com/bliki/GivenWhenThen.html

Have a look at the stringmatcher unit tests as an example

[jjw24]

I removed the unused InternalVisibleTo for Flow.Launcher project. We can add it when it's actually used