Add module skeletons

The "skeletons" of the modules contain a README explaining what it is
about and an includes.txt which is used by the build-script.

modules/assets/README.md

@@ -0,0 +1,4 @@
+# Voxula Assets
+
+The Voxula Asset Manager is able to load multiple data formats and can
+store the data they contain in a way efficient to manage.

modules/assets/includes.txt

@@ -0,0 +1,3 @@
+{self}/inc-c
+{module-folder}/utility/inc-c
+{module-folder}/ecs/inc-c

modules/ecs/README.md

@@ -0,0 +1,4 @@
+# Voxula ECS
+
+The Voxula ECS (Vex) is a highly performant ECS (Entity Component
+System), it helps with managing data.

modules/ecs/includes.txt

@@ -0,0 +1,2 @@
+{self}/inc-c
+{module-folder}/utility/inc-c

modules/renderer/README.md

@@ -0,0 +1,4 @@
+# Voxula Renderer
+
+The Voxula renderer is a system to render voxels in an efficient way
+and to produce a visually appealing image.

modules/renderer/includes.txt

@@ -0,0 +1,4 @@
+{self}/inc-c
+{module-folder}/utility/inc-c
+{module-folder}/window/inc-c
+{module-folder}/ecs/inc-c

modules/utility/README.md

@@ -0,0 +1,3 @@
+# Voxula Utility
+
+Miscellaneous Utilities used throughout the Voxula Engine.

modules/utility/includes.txt

@@ -0,0 +1 @@
+{self}/inc-c

modules/window/README.md

@@ -0,0 +1,4 @@
+# Voxula Display Interaction
+
+This module contains code for opening windows or other means of
+displaying applications written with Voxula.

modules/window/includes.txt

@@ -0,0 +1,3 @@
+{self}/inc-c
+{module-folder}/utility/inc-c
+{module-folder}/ecs/inc-c

modules/world/README.md

@@ -0,0 +1,4 @@
+# Voxula World (De-)Serializer
+
+The code in this directory is used for serializing and deserializing
+worlds in Voxula's World Format.

modules/world/includes.txt

@@ -0,0 +1,2 @@
+{self}/inc-c
+{module-folder}/utility/inc-c