[physac] Add new port

[ex-purple]

Fixes #22935

• 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.
• The license declaration in vcpkg.json matches what upstream says.
• The installed as the "copyright" file matches what upstream says.
• The source code of the component installed comes from an authoritative source.
• The generated "usage text" is accurate. See docs/examples/adding-an-explicit-usage.md 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.

[BillyONeal]

Suggested change

	vcpkg_install_copyright(FILE_LIST "${CMAKE_CURRENT_LIST_DIR}/LICENSE")
	vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")

Why did you copy the license file here rather than getting it from the source distribution?

[BillyONeal]

(I will make this change for you if you want but this was sufficiently unusual I wanted to understand why you do that :) Thanks for the new port!)

[Cheney-W]

The currently used tag is 1.1, which is generated at Nov 3, 2019, but the LICENSE file of upstream is added Jul 24, 2022, so LICENSE file does not exist when downloading 1.1 source.

https://github.com/victorfisac/Physac

[Cheney-W]

If we want to use vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE"), then we need to download the latest commit of upstream instead of the 1.1 tag.

[ex-purple]

Right, I copied the license file here rather than getting it from the source distribution because version 1.1 does not include license file.

[BillyONeal]

Ah, I missed that that was changed. Thanks for clarifying!

[BillyONeal]

Thanks for the new port!