fix: remove V1 models. Move clearly schema defined objects into V0 package. (#120)

The platform no longer uses non-V0 packages. At this point, I'm confident we can remove the V1 models. I've also taken the chance to consolidate some of the sprawl we have.

I will use this version to hard cut all connectors off to non-v1 packages.

Author: davinchia

protocol-models/src/main/java/io/airbyte/protocol/models/AirbyteProtocolSchema.java

@@ -11,7 +11,7 @@ public enum AirbyteProtocolSchema {
 
   PROTOCOL("airbyte_protocol.yaml");
 
-  static final Path KNOWN_SCHEMAS_ROOT = JsonSchemas.prepareSchemas("airbyte_protocol", AirbyteProtocolSchema.class);
+  static final Path KNOWN_SCHEMAS_ROOT = JsonSchemas.prepareSchemas("airbyte_protocol/v0", AirbyteProtocolSchema.class);
 
   private final String schemaFilename;