Simplify function names and make it overridable

[lerenn]

Current situation

Some function names can be really long because :

• Using the operation names directly is not recommanded as we cannot derive the name from sender to receiver and vice/versa;
• There can be some ambiguity can appear in some minor cases when mixing messages and channels, so we put the request function as Request<MsgName>On<ChannelName>ChannelWith<MsgName>On<ChannelName>Channel.

Problem

• Really long names. Example: RequestServiceInfoResponseOnServiceInfoResponseChannelWithServiceInfoRequestOnServiceInfoRequestChannel
• Not reflecting the operations

Proposition

Change function names

• Send: Send[To (User)/ As (App)]<OperationName>Operation[With<MessageName>]
• Subscribe: SubscribeTo<OperationName>Operation[With<MessageName>]
• Receive: <OperationName>Operation[With<MessageName>]Received
• Request: RequestTo<OperationName>Operation[With<ReplyMessageName>][With<RequestMessageName>]
• Reply: ReplyTo<OperationName>Operation[With<RequestMessageName>][WithReply<MessageName>]

Note: [With<MessageName>] and others should be implemented with issue 140 for multiple messages

Examples:

• Operation receiveHello with side receive:
  • Send (user): SendToReceiveHelloOperation
  • Subscribe (app): SubscribeToReceiveHelloOperation
  • Receive (app): ReceiveHelloOperationReceived
  • Request/Reply: N/A
• Operation sendHello with side send:
  • Send (app): SendAsSendHelloOperation
  • Subscribe (user): SubscribeToSendHelloOperation
  • Receive (user): SendHelloOperationReceived
  • Request/Reply: N/A
• Operation pingRequest with sidereceive:
  • Send (user): SendToPingRequestOperation
  • Subscribe (app): SubscribeToPingRequestOperation
  • Receive (app): PingRequestOperationReceived
  • Request (user): RequestPingRequestOperation
  • Reply (app): ReplyToPingRequestOperation
• Operation onUserSignedUp with side send:
  • Send (app): SendAsOnUserSignedUpOperation
  • Subscribe (user): SubscribeToOnUserSignedUpOperation
  • Receive (user): OnUserSignedUpOperationReceived
  • Request/Reply: N/A

Note: Could be prefixed with With if there is multiple messages