JJ: Description from the destination commit:

JJ: Description from source commit:
+ clean up tos

JJ: Description from source commit:
rename

tools/dune

@@ -0,0 +1,11 @@
+(executable
+ (public_name offline)
+ (name offline)
+ (modules offline offline_impl)
+ (libraries cmdliner bos fmt mirage-crypto ptime mte vif))
+
+(executable
+ (public_name gen_signatures_registry)
+ (name gen_signatures_registry)
+ (modules gen_signatures_registry)
+ (libraries angstrom bos fmt))