PraseTja: Add branches

- Needs the following changes to the database: change `easy`, `normal`, `hard`, and `oni` to `TEXT` type
- When adding songs to the database and if, for example, a song's 7-star difficulty has a branch, instead of `7` input `7 B`, this is to display song's branch support on the song selection
- Branch can be forced in debug

public/src/css/debug.css

@@ -44,7 +44,8 @@
 	box-sizing: border-box;
 }
 
-#debug .input-slider{
+#debug .input-slider,
+#debug .select{
 	display: flex;
 	width: 100%;
 	height: 30px;
@@ -59,7 +60,8 @@
 	padding: 2px 4px;
 	text-align: center;
 }
-#debug .input-slider>span{
+#debug .input-slider>span,
+#debug .select>span{
 	display: block;
 	width: 10%;
 	height: 100%;
@@ -70,10 +72,19 @@
 	line-height: 2em;
 	cursor: pointer;
 }
-#debug .input-slider>span:hover{
+#debug .input-slider>span:hover,
+#debug .select>span:hover{
 	opacity: 1;
 	background: #333;
 }
+#debug .select select{
+	width: 90%;
+	height: 100%;
+	box-sizing: border-box;
+	font-size: 18px;
+	font-family: sans-serif;
+	padding: 2px 4px;
+}
 
 #debug label{
 	display: block;
@@ -111,6 +122,7 @@
 	margin-left: 3px;
 }
 
-#debug .autoplay-label{
+#debug .autoplay-label,
+#debug .branch-hide{
 	display: none;
 }