Materializer chaining

[Yohe-Am]

Allow materializers to be chained together, the results of one serving as input of another (or even many). This can be used to compose common logic, like middleware, inline within typegraph. The best way of doing this today might be by relying on custom functions that share the middleware logic amongst themselves.

It might be overkill though:

• Might introduce latency concerns users will have to be wary about
• Might challenge the expressiveness of typegraphs, as this feature would be a big fat step towards turing completeness (not desirable?)
• Sits in a place between dedicated typegraph features like a policies and custom function materializers.
  • Utility is easy to see but can it be avoided by improving the already existing features some other way?

[linear]

MET-540 Materializer chaining