Add initial database setup and user/artist management functionality

api/handlers/artist_handler.go

@@ -0,0 +1,25 @@
+package handlers
+
+import (
+	"net/http"
+	"zardzul/music-index/repository"
+
+	"github.com/gin-gonic/gin"
+)
+
+type ArtistHandler struct {
+	repo repository.ArtistRepository
+}
+
+func NewArtistHandler(repo repository.ArtistRepository) *ArtistHandler {
+	return &ArtistHandler{repo: repo}
+}
+
+func (handler *ArtistHandler) GetAll(c *gin.Context) {
+	artists, err := handler.repo.GetAll(c.Request.Context())
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+	}
+
+	c.JSON(http.StatusOK, artists)
+}