Add temporary waypoints and /firm sendcoords

src/main/java/moe/nea/firmament/mixins/accessor/AccessorGameRenderer.java

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.mixins.accessor;
+
+import net.minecraft.client.render.Camera;
+import net.minecraft.client.render.GameRenderer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Invoker;
+
+@Mixin(GameRenderer.class)
+public interface AccessorGameRenderer {
+    @Invoker("getFov")
+    double getFov_firmament(Camera camera, float tickDelta, boolean changingFov);
+}