[Java] Add FP16 Support for Java Client

[du00cs]

Also change the minimum retryCnt to 0, retry can sometimes be expensive. If it is not acceptable, I will remove that.

[gaojiansen]

请问java把图片的rgb数组传到推理服务后，服务器需要的格式是uint8格式 java中把获取的r，g，b三个参数转成byt并添加到byte数组后 是有符号的二进制 那需要怎么才能转成无符号的二进制传呢？

[matthewkotila]

@jbkyang-nvi can you review this code? I think you were the one who mainly worked on the java client. If I'm mistaken, can you recommend someone who is familiar with it?

[jbkyang-nvi]

@krishung5 can you take a look? I can review sometimes next week. @du00cs can you send us the CLA? ref: https://github.com/triton-inference-server/server/blob/main/CONTRIBUTING.md