feat: Implement local evaluation for feature flags #48
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This will make it more ergonomic for future updates. Most of the code stayed the same.
I've also added a helper `checked!` function that avoids the whole `{:ok, _}` check, but it's more prone to errors. People should still use `check` most of the time, but `check!` is more ergonomic for scripts
This commit introduces local evaluation capabilities for feature flags in the PostHog Elixir SDK. It includes a new `PostHog.FeatureFlags.Poller` module for polling feature flag definitions, a `PostHog.FeatureFlags.Evaluator` for local evaluation logic, and updates to the configuration to support local evaluation options. Additionally, comprehensive tests have been added to ensure the functionality works as expected.
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This commit introduces local evaluation capabilities for feature flags in the PostHog Elixir SDK. It includes a new
PostHog.FeatureFlags.Pollermodule for polling feature flag definitions, aPostHog.FeatureFlags.Evaluatorfor local evaluation logic, and updates to the configuration to support local evaluation options. Additionally, comprehensive tests have been added to ensure the functionality works as expected.