fix: support pointers to structs

gapr.go

@@ -30,6 +30,7 @@ func (g *Gapr) Map(input any) (any, error) {
 
 	if t.Kind() == reflect.Pointer {
 		t = t.Elem()
+		v = v.Elem()
 	}
 
 	if !canMap(t) {

gapr_test.go

@@ -30,6 +30,20 @@ func TestGapr_Map(t *testing.T) {
 			want:    nil,
 			wantErr: false,
 		},
+		{
+			name: "Test simple struct pointer",
+			args: args{
+				input: &struct {
+					GivenName string
+					Surname   string
+				}{
+					GivenName: "Ted",
+					Surname:   "Tester",
+				},
+			},
+			want:    nil,
+			wantErr: false,
+		},
 		{
 			name: "Test nested struct",
 			args: args{