First dispatcher

- Create (sub)command structure.
- First experimental dispatcher to start the daemon.

src/types/introducer.rs

@@ -6,7 +6,8 @@
 
 use sequoia_wot as wot;
 use wot::{CertSynopsis, Certification};
-use sequoia_openpgp::{policy::StandardPolicy, Cert, KeyID};
+use sequoia_openpgp::policy::StandardPolicy;
+use sequoia_openpgp::Cert;
 
 #[derive(Debug, Clone)]
 pub struct Introducer {
@@ -44,7 +45,7 @@ impl Introducer {
                     u.certifications().for_each(|s| {
                         if s.signature_alive(None, None).is_ok() {
                             s.issuers().for_each(|i| {
-                                if i == &my_keyid { result = true; }          
+                                if i == &my_keyid { result = true; }
                             });
                         }
                     })