CAMEL-21018: Create a Camel TorchServe component

[tadayosi]

Description

Initial implementation of a Camel TorchServe component. As the pull req is getting bigger, I split it into parts. Following the pull req, I'll submit more enhancements later:

• Add IT tests
• Support passing parameters as headers more comprehensively

Target

• I checked that the commit is targeting the correct branch (note that Camel 3 uses camel-3.x, whereas Camel 4 uses the main branch)

Tracking

• If this is a large change, bug fix, or code improvement, I checked there is a JIRA issue filed for the change (usually before you start working on it).

https://issues.apache.org/jira/browse/CAMEL-21018

Apache Camel coding standards and style

• I checked that each commit in the pull request has a meaningful subject line and body.

• I have run mvn clean install -DskipTests locally from root folder and I have committed all auto-generated changes.

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[tadayosi]

I'm now rewriting my pull req with Spring RestTemplate instead of OkHttp according to Claus' suggestion. Once done, I'll let you know again.

-                <library>okhttp4-gson</library>
+                <library>resttemplate</library>

[tadayosi]

Turned out resttemplate brings another problem to the generated openapi client, so I decided to rewrite it with openapi-generator & apache-httpclient. It now works fine.

-                                <library>okhttp4-gson</library>
+                                <library>apache-httpclient</library>

@davsclaus Please check it again.