Mock all applications within utils/message-generator to be used in integration tests where useful

[rrybarczyk]

A new crate in utils/message-generator will have functions to return any message for any role in order to perform integration testing.

• Delete test-utils/pool in favor of message-generator #284

The following roles and their channels should be implemented in order to properly test all applications:

• Add Mocked SV2 Pool with Extended Channel Messsages to message-generator #267
• Add Mocked SV2 Pool with Standard Channels Messages to message-generator #271
• Add Mocked SV2 Pool with Group Channels Message to message-generator #272
• Add Mocked SV2 Proxy with Standard Channels Messages to message-generator #273
• Add Mocked Job Negotiator and Mocked Template Provider Message to message-generator #83
• Add Mocked SV1/SV2 Proxy Translator with Extended Channels to message-generator #286
• Add Mocked SV2 Proxy with Standard Channels Messages to message-generator #273
• Add Mocked SV2 Proxy with Group Channels Message to message-generator #274
• Add Mocked SV2 MD to message-generator #285
• Add Mocked SV1 MD Message to message-generator #268

[pavlenex]

@rrybarczyk Considering our refactoring efforts and other trackers we have is this one still relevant with all of it's related issues? It's been a while and we change a strategy quite a few times, want to make sure issues we have opened are actually relevant. cc @plebhash @jbesraa

[rrybarczyk]

@rrybarczyk Considering our refactoring efforts and other trackers we have is this one still relevant with all of it's related issues? It's been a while and we change a strategy quite a few times, want to make sure issues we have opened are actually relevant. cc @plebhash @jbesraa

Someday when we are doing actual operability tests, these issues may make sense to address. However, they are not important right now and this should not be worked on/should be in our backlog.

@plebhash may be able to add more context.