[sqlite3] Provide .pc pkg-config files

[traversaro]

Is your feature request related to a problem? Please describe.
The sqlite3 library on Unix system provides .pc files (see for example https://packages.debian.org/jessie/amd64/libsqlite3-dev/filelist), but the CMake-based build system maintained in vcpkg does not install them. This may be problematic because downstream build system that depend on sqlite3 may expect this .pc files to be available on Linux/macOS .

Proposed solution
We should modify the sqlite3 CMake-based build system maintained in vcpkg to emit .pc as done by the native sqlite3 build system.

Additional context
This issue is similar in #11817 and emerged in the same context: while packaging the ignition-transport library and its .pc files.

[autoantwort]

This can be closed, there is now a .pc file