Add community tools chapter

Author: Trolldemorted

src/SUMMARY.md

@@ -84,4 +84,5 @@
     - [Navigation Vector](./file-formats/navigation-vector.md)
     - [Navpoint Matrix](./file-formats/navpoint-matrix.md)
     - [Fixed Paths](./file-formats/fixed-paths.md)
+- [Community Tools](./community-tools.md)
 - [Appendix](./ch80-00-appendix.md)

src/community-tools.md

@@ -0,0 +1,4 @@
+# Community Tools
+
+## [Nav Point Editor](https://github.com/P3Modding/Mapping-Tools)
+The Nav Point Editor helps you convert maps or satellite imagery into Patrician3 custom navmap formats (`nav_matrix.dat`, `nav_vec.dat`, `matrix_int.dat`).