Add quick /join command for catacombs and kuudra

src/main/kotlin/moe/nea/firmament/events/CommandEvent.kt

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.events
+
+import com.mojang.brigadier.CommandDispatcher
+import com.mojang.brigadier.tree.LiteralCommandNode
+import net.minecraft.command.CommandRegistryAccess
+import moe.nea.firmament.commands.CaseInsensitiveLiteralCommandNode
+import moe.nea.firmament.commands.DefaultSource
+import moe.nea.firmament.commands.literal
+
+data class CommandEvent(
+    val dispatcher: CommandDispatcher<DefaultSource>,
+    val ctx: CommandRegistryAccess,
+) : FirmamentEvent() {
+    companion object : FirmamentEventBus<CommandEvent>()
+
+    fun register(
+        name: String,
+        block: CaseInsensitiveLiteralCommandNode.Builder<DefaultSource>.() -> Unit
+    ): LiteralCommandNode<DefaultSource> {
+        return dispatcher.register(literal(name, block))
+    }
+}