create support for releases, artists, tracks, and credits

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

main.go

@@ -15,7 +15,7 @@ import (
 	musicView "arimelody.me/arimelody.me/music/view"
 
 	"github.com/jmoiron/sqlx"
-    _ "github.com/lib/pq"
+	_ "github.com/lib/pq"
 )
 
 const DEFAULT_PORT int = 8080
@@ -49,6 +49,14 @@ func main() {
     }
     fmt.Printf("%d releases loaded successfully.\n", len(global.Releases))
 
+    // pull track data from DB
+    global.Tracks, err = musicController.PullAllTracks(global.DB)
+    if err != nil {
+        fmt.Printf("Failed to pull tracks from database: %v\n", err);
+        panic(1)
+    }
+    fmt.Printf("%d tracks loaded successfully.\n", len(global.Tracks))
+
     // start the web server!
     mux := createServeMux()
     port := DEFAULT_PORT