* add timestamp to prices and keep last updated at in publisher

* Add .idea/ to .gitignore

* add a simple health check api

* add port and health check logic

* run black

* empty

* run pre-commit

* undo remove blank line

* fix: update the last successful update only when it's greater

* refactor: fix typings in pyth replicator

* fix: type error in coin_gecko.py

* refactor: health check code to improve readability and performance

* fix: logic error updating last successful update

* chore: update version to 1.1.0 in pyproject.toml

* refactor: rename port to health_check_port

* refactor: rename health_check_test_period_secs to health_check_threshold_secs

* refactor: use fastapi for health check api

* chore: format imports

* Refactor health check API and add is_healthy method to Publisher class

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Co-authored-by: Keyvan <keyvan@dourolabs.xyz>