Add test framework to test

- Mail encryption (when expected)
- Introducer listing, adding and removing
- Locals listing, adding and removing

e2e-tests/local_run.sh

@@ -1,10 +1,10 @@
 #!/usr/bin/bash
 
-cargo build --release
+cargo build
 
 docker run -ti \
   --rm \
   --mount type=bind,src=$(pwd),dst=/opt/husk/mapped/ \
-  localhost/mta \
-  bash -c "/usr/bin/prepare.sh && bash /opt/husk/mapped/e2e-tests/runner.sh"
+  localhost/mta:latest \
+  bash -c "/usr/bin/prepare.sh && bash /opt/husk/mapped/e2e-tests/runner.sh && bash -i"