Add --and for doing extra compilation with the same arguments

```bash
coconut src dst --and src2 dst2 --and src3 dst3 --target x.y
```
should be equivalent to
```bash
coconut src dst --target x.y
coconut src2 dst2 --target x.y
coconut src3 dst3 --target x.y
```
and also enable `--jobs` to do all the compilation simultaneously.