test: 增加 Bug1 至 BugFarm

playground/BugFarm/Bug1/Main.snow

@@ -0,0 +1,7 @@
+function: main
+    return_type: int
+    body:
+        3 L
+        return 65537
+    end body
+end function

playground/BugFarm/Bug1/README.md

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+## 编译器输出
+### Snow 源代码
+#### Main.snow
+```snow
+function: main
+    return_type: int
+    body:
+        3 L
+        return 65537
+    end body
+end function
+```

playground/Demo11/Main.snow

@@ -0,0 +1,7 @@
+function: main
+    return_type: int
+    body:
+        3 L
+        return 65537
+    end body
+end function