API notes should support annotating templated C++ tags #83118
Description
Motivation
API Notes allow for annotating C+ APIs without modifying header files, such as to rename methods of C++ non-templated types in Swift. However, templated types aren't currently supported by API Notes, meaning that e.g. the only way to rename a method of a C++ templated type is to put the SWIFT_NAME annotation on the method definition in the header.
Proposed solution
Add support for annotating templated types via API Notes.
Alternatives considered
No response
Additional information
rdar://131566632