Progress: Begin adding GPGME support.

Progress: Begin adding GPGME support.

The GPGME is not really that good.
It calls the user space GNUPG program `gpg`.

This is clunky and nasty.

The project also handles memory poorly.
Thanks to utilizing it, the `tacocat` now exists with reachable memory.

```
==17190== HEAP SUMMARY:
==17190==     in use at exit: 1,189 bytes in 39 blocks
==17190==   total heap usage: 124 allocs, 85 frees, 42,076 bytes allocated
```

I should look into other projects as well once I get GPGME fully setup and working.
Projects like libgit2 or even trying to directly use libgcrypt.