Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/doc/materials/materials/MAT_MISC_METAL b/doc/materials/materials/MAT_MISC_METAL
new file mode 100644
index 0000000..61b871c
--- /dev/null
+++ b/doc/materials/materials/MAT_MISC_METAL
@@ -0,0 +1,18 @@
+Materialid:
+MAT_MISC_METAL "misc_metal"
+
+Name:
+"Metall" "Metalls" "Metall" "Metall"
+
+Geschlecht:
+N
+
+Beschreibung:
+allg. Metall
+
+Erkennbarkeit:
+- keine Einschraenkung -
+
+Gruppenzugehoerigkeit:
+MATGROUP_METAL:100
+MATGROUP_SOLID:100