archivers/snappy: Update to 1.2.2

• Import patches from Arch Linux to fix rtti and enable "make test"

with devel/googletest from tree

• Add localbase:ldflags for "make test"
• Bump C++ standard to 14

Changelog: https://github.com/google/snappy/releases/tag/1.2.2

Sources:
https://gitlab.archlinux.org/archlinux/packaging/packages/snappy/-/blob/a5d1b76094f6eaf763c0e883b78623a3fb07e10e/snappy-reenable_rtti.patch
https://gitlab.archlinux.org/archlinux/packaging/packages/snappy/-/blob/a5d1b76094f6eaf763c0e883b78623a3fb07e10e/snappy-use_system_gtest.patch

PR: 286253
Reviewed by: vanilla (maintainer)