make the skin renderer less bad (thanks bray)

src/main/java/cc/fascinated/exception/impl/BadRequestException.java

@@ -0,0 +1,12 @@
+package cc.fascinated.exception.impl;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.BAD_REQUEST)
+public class BadRequestException extends RuntimeException {
+
+    public BadRequestException(String message) {
+        super(message);
+    }
+}

src/main/java/cc/fascinated/exception/impl/MojangAPIRateLimitException.java

@@ -0,0 +1,9 @@
+package cc.fascinated.exception.impl;
+
+
+public class MojangAPIRateLimitException extends RateLimitException {
+
+    public MojangAPIRateLimitException() {
+        super("Mojang API rate limit exceeded. Please try again later.");
+    }
+}

src/main/java/cc/fascinated/exception/impl/RateLimitException.java

@@ -0,0 +1,12 @@
+package cc.fascinated.exception.impl;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.TOO_MANY_REQUESTS)
+public class RateLimitException extends RuntimeException {
+
+    public RateLimitException(String message) {
+        super(message);
+    }
+}

src/main/java/cc/fascinated/exception/impl/ResourceNotFoundException.java

@@ -0,0 +1,9 @@
+package cc.fascinated.exception.impl;
+
+import lombok.experimental.StandardException;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@StandardException
+@ResponseStatus(HttpStatus.NOT_FOUND)
+public class ResourceNotFoundException extends RuntimeException { }