moved the entries up one folder, added the folder to the keywords

games/planetary_hoppers.md

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+# Planetary Hoppers
+
+_Multiplayer space strategy game._
+
+- Home: https://sourceforge.net/projects/planets/, http://planets.sourceforge.net/
+- State: beta, inactive since 2003
+- Download: https://sourceforge.net/projects/planets/files
+- Keywords: strategy
+- Code repository: https://gitlab.com/osgames/planets.git (backup of cvs), http://planets.cvs.sourceforge.net/ (cvs)
+- Code language: Java
+- Code license: GPL-2.0
+
+## Building
+