[gstreamer] add feature to enable aom support

[marcbull]

• Changes comply with the maintainer guide
• SHA512s are updated for each updated download
• The "supports" clause reflects platforms that may be fixed by this new version
• Any fixed CI baseline entries are removed from that file.
• Any patches that are no longer applied are deleted from the port's directory.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is added to each modified port's versions file.

[LilyWangLL]

This feature build failed on x64-windows with the following error:

../src/1.22.5-76261fda2d.clean/subprojects/gst-plugins-bad/ext/aom/gstav1dec.c(62): error C2121: '#': invalid character: possibly the result of a macro expansion
../src/1.22.5-76261fda2d.clean/subprojects/gst-plugins-bad/ext/aom/gstav1dec.c(62): error C2059: syntax error: 'if'
../src/1.22.5-76261fda2d.clean/subprojects/gst-plugins-bad/ext/aom/gstav1dec.c(62): error C2059: syntax error: '}'

[LilyWangLL]

Feature gstreamer[aom] passed on x64-linux.