HTTP-Bridge add support for time based subscribes

[michaelgrill]

• "Fixed" bug where an exception gets throw during deactivation of a component using the HTTP-Bridge (ty @Sn0w3y Introduce HTTP-bridge & migrate Shelly Plug S #2381 (comment))

now to get an instance of a BridgeHttp the following code needs to be added

@Reference
private BridgeHttpFactory httpBridgeFactory;
private BridgeHttp httpBridge;

@Activate
private void activate() {
    this.httpBridge = this.httpBridgeFactory.get();
}

@Deactivate
private void deactivate() {
    this.httpBridgeFactory.unget(this.httpBridge);
    this.httpBridge = null;
}

as far as i know the exception which is happening is not intended to happen but for now to avoid unexpected behaviour because of the exception this is the prefered way to use it.

• Made CycleSubscriber thread safe to avoid concurrent modification exceptions

• Added time based subscribtions
  simple example to add a subscription with a delay of 1 minute between the calls would be

 final var delayProvider = DelayTimeProviderChain.fixedDelay(new Delay(1L, TimeUnit.MINUTES);
 this.httpBridge.subscribeTime(delayProvider, "http://127.0.0.1/status", t -> {
 	// process data
 }, t -> {
 	// handle error
 });

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[Sn0w3y]

@michaelgrill could you check if my fix for my Pull is now using it correctly?

Also please review the Implementations of the Shelly devices if you can?

[PullRequest](https://github.com/OpenEMS/openems/pull/2519/files#diff-3d5ae9c7ded7d622bee13862ce0399cbb1d8f040a1fae7f863b6a9e6dddb53f1)

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[github-actions]

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[sfeilmeier]

Thank you both for the professional code & review! 👍

[sfeilmeier]

@michaelgrill I would just make this public final boolean isBodyAllowed; - and avoid the getter.