Add auto sprint toggle keybinding

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

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.events
+
+import net.minecraft.client.gui.DrawContext
+
+/**
+ * Called when hud elements should be rendered, before the screen, but after the world.
+ */
+data class HudRenderEvent(val context: DrawContext, val tickDelta: Float) : FirmamentEvent() {
+    companion object : FirmamentEventBus<HudRenderEvent>()
+}