Adapt simple scripting to build draft spec

Add a rule to the Makefile to move draft builds into a draft subdirectory

Signed-off-by: Joshua Lock <[email protected]>

Author: joshuagl

Makefile

@@ -9,6 +9,10 @@ latest: spec
 	mkdir -p latest
 	cp tuf-spec.html latest/index.html
 
+draft: spec
+	mkdir -p draft
+	cp tuf-spec.html draft/index.html
+
 versioned: spec
 	mkdir -p $(shell python3 $(SPEC_DIR)/get_version.py $(SPEC_DIR)/tuf-spec.md)
 	cp tuf-spec.html $(shell python3 $(SPEC_DIR)/get_version.py $(SPEC_DIR)/tuf-spec.md)/index.html