renamed games folder to entries folder (also contained frameworks, libraries, ...) and added to the backlog

entries/pax_britannica.md

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+# Pax Britannica
+
+_One-button real-time strategy game._
+
+- Home: https://web.archive.org/web/20180807110800/http://paxbritannica.henk.ca/
+- State: mature
+- Keywords: strategy, multiplayer, real time
+- Code repository: https://github.com/henkboom/pax-britannica.git
+- Code language: Lua, C
+- Code license: MIT
+
+## Building
+