CID-3792: Implement heartbeat support

[mohamedlajmileanix]

🛠 Changes made

Implement heartbeat support

✨ Type of change

Please delete the options that are not relevant.

• New feature (non-breaking change which adds functionality)

🧪 How Has This Been Tested?

• No tests needed

🏎 Checklist:

• My code follows the style guidelines
• I have performed a self-review of my own code
• Any dependent changes have been merged and published in downstream modules
• My commit message clearly reflects the changes made
• Assigned the appropriate labels (version, PR type, etc.)

[github-actions]

LeanIX GitHub Agent Code Coverage

File	Coverage [95.65%]	🍏
WebSocketClientConfig.kt	95.65%	🍏

Total Project Coverage	67.88%	🍏

[henriq-amaral-leanix]

I'm not sure if we need to create a new endpoint for it.
On the server, we have the following method:

val accessor = MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor::class.java)
boolean isHeartbeat = accessor.isHeartbeat();

Maybe we could use it for the heartbeats.
Here are some examples using it, with interceptor and handler:
https://github.com/savra/StepicMiddleJavaDeveloperMtsBank/blob/2c03345dac24bd2ba0a13be1f0de6cf48b3b128e/src/main/java/com/hvdbs/savra/StepicMiddleJavaDeveloperMtsBank/websocket/controller/StompChannelOutboundInterceptor.java#L55

https://github.com/epam/TimebaseWS/blob/90b85b75c5f7cdc4bc2ab4cfaf1f7f4ef1509522/java/ws-server/src/main/java/com/epam/deltix/tbwg/webapp/interceptors/WebSocketLogInterceptor.java#L40

https://github.com/WeBankBlockchain/WeEvent/blob/0d75c5427814d400451a019ee74f161edaf03daa/weevent-broker/src/main/java/com/webank/weevent/broker/protocol/stomp/BrokerStomp.java#L92