HOLY REFACTOR GOOD GRIEF (also finally started some CRUD work)

Signed-off-by: ari melody <ari@arimelody.me>

music/model/credit.go

@@ -0,0 +1,7 @@
+package model
+
+type Credit struct {
+    Artist  *Artist `json:"artist"`
+    Role    string  `json:"role"`
+    Primary bool    `json:"primary" db:"is_primary"`
+}