New package 'seergdb' for Factory

Hello, I'm submitting devel:tools/seergdb to openSUSE:Factory. SeerGDB is a modern, beautiful, useful GUI for GNU GDB written in modern C++. It's quite well maintained, and I think it'd be really useful as GDB's default interface won't be to everyone's liking. Devel package: https://build.opensuse.org/package/show/devel:tools/seergdb I'll take good care of it!