Refactored proxy configurat ion and updated documentat ion (#27) (#27)

Renamed FileConfig Provider to FileProxyP rovider and updated its methods to handle proxy configurat ions
Updated Proxy entity to include new fields and methods for conversion to envoy proto objects
Updated SpringConf iguration to reflect changes in ProxyProvi der
Updated DiscoveryS erver class comments for better understand ing
Updated applicatio n.yml to include listener configurat ions
Added details about envoy control plane and open API exemplar in README.md

Updated release workflow and Dockerfiles (#26)

* Refactored ConfigProvider and added file change watcher in FileConfigProvider

Signed-off-by: Ayan Sen <[email protected]>

* moved to jvm 11

Signed-off-by: Ayan Sen <[email protected]>

* Updated release workflow and Dockerfiles for envoy-control-plane and openapi-exemplar

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Signed-off-by: Ayan Sen <[email protected]>

updated docker publish trigger to release creation (#24)

Signed-off-by: Ayan Sen <[email protected]>

added github workflows for pubshing to contaner registry (#11)

* moved common springboot dependencies to gradle plugin
* updated kotlin version
* added docker file for openapi-exemplar app
* added github action to publish to github container registry
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Signed-off-by: Ayan Sen <[email protected]>