artifacts: implement musicbrainz tooling

src/artifacts/bandcamp.rs

@@ -1,3 +1,5 @@
+use std::collections::HashSet;
+
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 
@@ -10,7 +12,7 @@ pub struct BandcampQueryArgs {
 
 impl Into<Artifact> for bandcamp::Artist {
     fn into(self) -> Artifact {
-        Artifact::Artist(Artist { name: self.name, bio: self.bio, location: self.location, sources: vec![SourceID::Bandcamp(self.id)] })
+        Artifact::Artist(Artist { name: self.name, bio: self.bio, location: self.location, sources: HashSet::from([SourceID::Bandcamp(self.id)])})
     }
 }
 
@@ -22,7 +24,7 @@ impl Into<Artifact> for bandcamp::Album {
             artist: self.band.name,
             credits: self.credits,
             release_date: Some(self.release_date),
-            sources: vec!{SourceID::Bandcamp(self.id)}
+            sources: HashSet::from([SourceID::Bandcamp(self.id)])
         })
     }
 }