[libshout] New port of icecast-libshout

[JoergAtGithub]

• Changes comply with the maintainer guide.
• The name of the port matches an existing name for this component on https://repology.org/ if possible, and/or is strongly associated with that component on search engines.
• Optional dependencies are resolved in exactly one way. For example, if the component is built with CMake, all find_package calls are REQUIRED, are satisfied by vcpkg.json's declared dependencies, or disabled with CMAKE_DISABLE_FIND_PACKAGE_Xxx.
• The versioning scheme in vcpkg.json matches what upstream says.
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• The source code of the component installed comes from an authoritative source.
• The generated "usage text" is accurate. See adding-usage for context.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is in the new port's versions file.
• Only one version is added to each modified port's versions file.

[JoergAtGithub]

I would appreciate some help with the Windows builds. The autoconf seems to go wrong somehow.
What I can see from the logs is, that it lists a non existing filename ssl.lib instead of libssl.lib for OpenSSL integration.

[WangWeiLin-MV]

It is passed in Linux. Testing in Windows.

Updates: openssl:openssl_x64-windows provides libssl.lib

[JoergAtGithub]

@WangWeiLin-MV I set the Windows triplets as unsupported by this port, as I found no solution for the build fails.
All other triplets should work as indended!

[BillyONeal]

As far as I can see, this feature is not 'wired up' in portfile.cmake. Should it be here?

[BillyONeal]

Ah, I see, it goes through https://gitlab.xiph.org/xiph/icecast-libshout/-/blob/master/configure.ac#L183 -- this needs to be fixed to respect the feature.

[BillyONeal]

We've kind of taken a dim view of our default-features feature over time, as users find it very difficult to disable anything declared as a default feature.

Moreover, this default feature appears to enable APIs, which is a problem because things become silently broken. See https://learn.microsoft.com/vcpkg/contributing/maintainer-guide#default-features-should-enable-behaviors-not-apis

Can this just not be a feature in the first place if you expect people to ~always need it, or is speex painful to build?

[WangWeiLin-MV]

Suggested change

	SHA512 eb505b9019a97a91e10fa505225dde4f9950f6ae50b54c7afd806f6eebeb865862de85e9d0a114f2e8c4f974c4db60622e71f52f5e758cdb0efcda735bb7ab51
	SHA512 f064e2b2dd686c7647ba4c5afb9ca7e85b2015643d7a185cc319f47461aacc765e7f9b3e9576e09a73a8af0724a54fafdd7c064756d3c6e97329bb5f77806933

[WangWeiLin-MV]

Suggested change

	SHA512 d2a9507a5a0d36134c4dc37fe38b3cb4d954dee3ffa5fd2b1bb4cd8af1e7804248e234e55fbcfba20fecec4bf159b2616d14ac537d03ffbff095a02d5f4bf201
	SHA512 67fe6fad8bf86990b5da311d729b9a746849f3d920c018112b4625b5e0d37a85444be16367967cb18a871c1ca1d679f5924ad3fc8547fbb30746b7e1f4b396bc