Create an analyzer to check for malformed marshallers #38
Description
Describe the issue
The diagnostics that were being previously generated have been removed from the v2.0.0 branch. This was mixed in with the source generation pipeline in an unsatisfactory way, and the diagnostics could not be reported until a build was performed. Instead, an analyzer should be added to the project to ensure that each of the IMarshaller<TSelf> properties, when explicitly implemented, are defined in a way that we can parse correctly.
Proposed solution
Add an analyzer to the project for real-time reporting of malformed marshallers.
Additional considerations
None.