[MCC-412658] Break up large client file

[cmcinnes-mdsol]

@mdsol/team-16

This PR breaks up the large client.rb file. No functional changes have been made. Opening as draft for now.

So far I've moved Authenticator, LocalAuthenticator, Signer, RemoteAuthenticator, and the error classes in to their own files. I also put the v2.rb methods back in their respective modules and stopped the monkey patching in that file.

[cmcinnes-mdsol]

@mdsol/team-16 the file structure:

BEFORE REORG

• lib/mauth
  • client.rb
• spec
  • mauth_client_spec.rb

AFTER REORG

• lib/mauth
  • client.rb
  • errors.rb
  • client
  • authenticator_base.rb
  • local_authenticator.rb
  • remote_authenticator.rb
  • security_token_cacher.rb
  • signer.rb
• spec
  • mauth_client_spec.rb
  • client
  • local_authenticator_spec.rb
  • remote_authenticator_spec.rb
  • signer_spec.rb
  • support
  • shared_contexts
    • client.rb
    • authenticator_base.rb

[ejennings-mdsol]

Can you fix the

mauth-client-ruby/spec/signable_spec.rb:16: warning: already initialized constant Dummy::SIGNATURE_COMPONENTS_V2
mauth-client-ruby/spec/signable_spec.rb:16: warning: previous definition of SIGNATURE_COMPONENTS_V2 was here

warnings when running the specs?

Also wondering if mauth_client_spec.rb should just be client_spec.rb.

[cmcinnes-mdsol]

@ejennings-mdsol got rid of the warnings and renamed spec file to client_spec.rb