Add recipe for netdb

recipes/netdb/recipe.sh

+GIT=https://github.com/redox-os/netdb
+
+function recipe_version {
+    printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+    skip=1
+}
+
+function recipe_update {
+    echo "skipping update"
+    skip=1
+}
+
+function recipe_build {
+    echo "skipping build"
+    skip=1
+}
+
+function recipe_test {
+    echo "skipping test"
+    skip=1
+}
+
+function recipe_clean {
+    echo "skipping clean" 
+    skip=1
+}
+
+function recipe_stage {
+    cp -r  * ../stage/
+    skip=1
+}