Add a crash report section for Scarpet apps (#892)

src/main/java/carpet/mixins/CrashReport_addScarpetAppsMixin.java

@@ -0,0 +1,28 @@
+package carpet.mixins;
+
+import java.util.stream.Collectors;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import carpet.CarpetServer;
+import net.minecraft.util.crash.CrashReport;
+import net.minecraft.util.crash.CrashReportSection;
+
+@Mixin(CrashReport.class)
+public abstract class CrashReport_addScarpetAppsMixin
+{
+    @Shadow
+    public abstract CrashReportSection getSystemDetailsSection();
+    
+    @Inject(at = @At("RETURN"), method = "fillSystemDetails")
+    private void fillSystemDetails(CallbackInfo info) {
+        if (CarpetServer.scriptServer == null || CarpetServer.scriptServer.modules.isEmpty()) return;
+        getSystemDetailsSection().add("Loaded Scarpet Apps", () -> {
+            return CarpetServer.scriptServer.modules.keySet().stream().collect(Collectors.joining("\n\t\t", "\n\t\t", ""));
+        });
+    }
+}