[lldb][test] Add embedded Swift test category#12927

Teemperor wants to merge 3 commits into

swiftlang:swift/release/6.4.xswiftlang/llvm-project:swift/release/6.4.xfrom

Teemperor:EmbeddedSwiftTestCategoryReleaseTeemperor/llvm-project:EmbeddedSwiftTestCategoryReleaseCopy head branch name to clipboard