Rename mixins after what they do, rather than where they do it

[no changelog]
Mixins are now named after what they do, and mixins for the same class that do different things should be in two
separate mixins now.

src/main/java/moe/nea/firmament/mixins/OutgoingPacketEventPatch.java

@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.mixins;
+
+import moe.nea.firmament.events.OutgoingPacketEvent;
+import net.minecraft.client.network.ClientCommonNetworkHandler;
+import net.minecraft.network.packet.Packet;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ClientCommonNetworkHandler.class)
+public class OutgoingPacketEventPatch {
+    @Inject(method = "sendPacket(Lnet/minecraft/network/packet/Packet;)V", at = @At("HEAD"), cancellable = true)
+    public void onSendPacket(Packet<?> packet, CallbackInfo ci) {
+        if (OutgoingPacketEvent.Companion.publish(new OutgoingPacketEvent(packet)).getCancelled()) {
+            ci.cancel();
+        }
+    }
+}