Support 1xx codes (#31)

* support 1xx codes

* Create InputRead100Test.java

* no contentlength header

* update build for gradle 9.1.0

* test 100 Continue to Expect header

* handle manual 1xx responses including make connection upgrade generic rather than websocket specific

* update comments

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Co-authored-by: robert engels <robaho@users.noreply.github.com>

change multipart form parser to use Logger

fix issue #24 - performance regression

change to publish to Central Publishing Portal

Merge branch 'main' of https://github.com/robaho/httpserver

Merge branch 'main' of https://github.com/robaho/httpserver

some DRY with the test support client

fix issue #17 - duplicate header count more than 2 causes exception (#18

)

* Fix a bug if multiple headers have the same name

* make slightly more efficient to avoid array allocation (most likely). change instanceof cases to use pattern matching for consistency

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Co-authored-by: Pierre Viret <pierre.viret@postfinance.ch>
Co-authored-by: robert engels <robaho@users.noreply.github.com>

fix issue #16 Unable to get client certificate because HttpsExchange.…

…getSSLSession() returns null

fix issue #15 HttpsConfigurator.configure method not executed for htt…

…ps connections