Add /albums GET endpoint

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

go-gin/internal/lib/albums.go

@@ -0,0 +1,24 @@
+package lib
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+type album struct {
+	ID     string  `json:"id"`
+	Title  string  `json:"title"`
+	Artist string  `json:"artist"`
+	Price  float64 `json:"price"`
+}
+
+var albums = []album{
+	{ID: "1", Title: "Blue Train", Artist: "John Coltrane", Price: 56.99},
+	{ID: "2", Title: "Jeru", Artist: "Gerry Mulligan", Price: 17.99},
+	{ID: "3", Title: "Sarah Vaughan and Clifford Brown", Artist: "Sarah Vaughan", Price: 39.99},
+}
+
+func GetAlbums(c *gin.Context) {
+	c.IndentedJSON(http.StatusOK, albums)
+}