crypto: BBS scheme for anonymous credentials with multiple presentations (#1794)

* crypto: BBS scheme for anonymous credentials with multiple presentations

* verify

* add files to sources

* more files

* more files, use cabal 3.0

* fix path

* extensions

* switch libbbs to fork

* return either from keygen

* use only secret key to sign

* improve FFI

* simplify

* update libbbs to support iOS

* add commoncrypto flag

* bump libbbs

* reject input of wrong length

* ci: get submodules

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>

.github/workflows/docker-image.yml

@@ -20,6 +20,8 @@ jobs:
     steps:
       - name: Clone project
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Log in to Docker Hub
         uses: simplex-chat/docker-login-action@v3