Config changes for tasks are predictable

[mrjones-plip]

Key Result: App developers do not need to test their task config changes on production.

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From Allies nugget synthesis' problem statements:

• It's difficult to test task rules without deploying them on production
• It's difficult to find and make sense of errors when setting up the CHT

From Product Team's OKRs:

• Ensure community members can own sustainable CHT deployments without Medic directly involved

App developers can easily visualize and quantify the impact of a change to config tasks