Create roadmap

roadmap.md

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+# Xen Orchestra roadmap
+
+Please consider it as an indicative roadmap, things can change.
+
+Item are expressed in a (roughly) decreasing priority order.
+
+## Features
+- [Advanced user management](https://xen-orchestra.com/users-roles-in-xen-orchestra/)
+- Graphs (RRD) showing CPU, RAM, IO load etc.
+- Managing hotfixes directly in XO
+
+## Fixes
+- Better server scalability
+- Solve client stability problems
+- [Resolve known bugs](./known-bugs.md)
+
+
+**Work in progress: this document will be updated soon**