feat: Add wait_for_healthcheck to DockerContainer

[rhoban13]

Adding a new wait_for_healthcheck to DockerContainer. This is related to #241, though this provides the functionality on DockerContainer not DockerCompose.

This feature enables testcontainers to achieve a similar functionality with docker compose where a service can declare a depends_on: service_healthy.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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  Coverage        ?   85.69%           
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  Files           ?       12           
  Lines           ?      699           
  Branches        ?      112           
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  Hits            ?      599           
  Misses          ?       75           
  Partials        ?       25           

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