Adding dependency report into doc

doc/Dependencies.md

@@ -0,0 +1,33 @@
+# Dependency report for PrusaSlicer
+## Possible dynamic linking on Linux
+* zlib: This should not be even mentioned in our cmake scripts but due to a bug in the system libraries of gtk it has to be linked to PrusaSlicer.
+* wxWidgets: searches for wx-3.1 by default, but with cmake option `SLIC3R_WX_STABLE=ON` it will use wx-3.0 bundled with most distros.
+* libcurl
+* tbb
+* boost
+* eigen
+* glew
+* expat
+* openssl
+* nlopt
+* gtest
+
+## External libraries in source tree
+* ad-mesh: Lots of customization, have to be bundled in the source tree.
+* avrdude: Like ad-mesh, many customization, need to be in the source tree.
+* clipper: An important library we have to have full control over it. We also have some slicer specific modifications.
+* glu-libtess: This is an extract of the mesa/glu library not oficially available as a package.
+* imgui: no packages for debian, author suggests using in the source tree
+* miniz: No packages, author suggests using in the source tree
+* qhull: libqhull-dev does not contain libqhullcpp => link errors. Until it is fixed, we will use the builtin version. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925540
+* semver: One module C library, author expects to use clib for installation. No packages.
+* Shiny: no packages
+* poly2tree: Obsolete, candidate for removal
+* polypartition: Obsolete, candidate for removal
+
+## Header only
+* igl
+* nanosvg
+* agg
+
+