Event Lineage: Create Transform Function for All Filter

[Cali0707]

Problem
Transform functions are how we track changes to eventtypes as events flow through the system. To support the all filter, we should implement a transform function to represent how a given eventtype becomes "narrower" as it passes the filter. Specifically, this transform function should (for each filter in the all filter):

1. Apply the filter
2. If the resulting eventtype is nil, return nil.

Persona:
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Exit Criteria
A measurable (binary) test that would indicate that the problem has been resolved.

Time Estimate (optional):
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Additional context (optional)
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