[FEATURE REQ] azure-core, configure for maxHttpSize in Azure HttpClient (target is Netty)

[weidongxu-microsoft]

Is your feature request related to a problem? Please describe.

Context: LRO URL is now more than 3KB. Some response contains both location header and azure-asyncoperation header, hence the header size would be near or exceed 8KB.

Default maxHttpSize in Netty is 8KB.
https://projectreactor.io/docs/netty/release/api/reactor/netty/http/HttpDecoderSpec.html#maxHeaderSize

This causes exception in customer, when runtime the header size exceed 8KB.
We had IcM on it. For now, ARM mitigated by shortening the URL.

Describe the solution you'd like

We'd like to have configurable maxHttpSize in Azure HttpClient.

Preferrable also set a default size at e.g. 16KB.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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[joshfree]

@samvaity PTAL

[samvaity]

Here is the PR updating netty max header size to 16KB #45291