This changes the AccountMaker to use pre-generated keys when
available, speeding up test runs.
As a side-effect we no longer need to compile the integration tests in
release mode with debug symbols. Losing debug symbols (-g) means
cargo no longer wants to recompile everything all the time too.
Tested locally and seems to works.
The imex code was deleting the key if it was already used. Turns out
none of the callers would not want this behaviour, so let's just
handle this case generally.
The user-visible change here is that it allows the FFI API to save
keys in the database for a context. This is primarily intended for
testing purposes as it allows you to get a key without having to
generate it.
Internally the most important change is to start using the
SignedPublicKey and SignedPrivateKey types from rpgp instead of
wrapping them into a single Key object. This allows APIs to be
specific about which they want instead of having to do runtime checks
like .is_public() or so. This means some of the functionality of the
Key impl now needs to be a trait.
A thid API change is to introduce the KeyPair struct, which binds
together the email address, public and private key for a keypair.
All these changes result in a bunch of cleanups, though more more
should be done to completely replace the Key type with the
SignedPublicKye/SignedPrivateKey + traits. But this change is large
enough already.
Testing-wise this adds two new keys which can be loaded from disk and
and avoids a few more key-generating tests. The encrypt/decrypt tests
are moved from the stress tests into the pgp tests and split up.
This should prevent accidental sending of unencrypted messages when
parent_is_encrypted returns an error. For example, if the database is
busy due to other thread activity, parent_is_encrypted should not return
false. Instead, message sending job should retry later.
