Added simple coin flip watch face (#63)

watch-faces/complication/simple_coin_flip_face.h

@@ -0,0 +1,60 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2023 Wesley Aptekar-Cassels
+ * Copyright (c) 2025 Vaipex
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#pragma once
+
+#include "movement.h"
+
+/*
+ * A extremely simple coin flip face updated from Wesley Aptekar-Cassels version.
+ *
+ * Press ALARM or LIGHT to flip a coin, after a short animation it will display
+ * "Heads" or "Tails". Press ALARM or LIGHT to flip again.
+ *
+ * This is for people who want a simpler UI than probability_face or
+ * randonaut_face. While those have more features, this one is more immediately
+ * obvious - useful, for instance, if you are using a coin flip to agree on
+ * something with someone, and want the operation to be clear to someone who
+ * has not had anything explained to them.
+ */
+
+typedef struct {
+    bool active;
+    bool is_start_face;
+    uint8_t inactivity_ticks;
+} simple_coin_flip_face_state_t;
+
+void simple_coin_flip_face_setup(uint8_t watch_face_index, void ** context_ptr);
+void simple_coin_flip_face_activate(void *context);
+bool simple_coin_flip_face_loop(movement_event_t event, void *context);
+void simple_coin_flip_face_resign(void *context);
+
+#define simple_coin_flip_face ((const watch_face_t){ \
+    simple_coin_flip_face_setup, \
+    simple_coin_flip_face_activate, \
+    simple_coin_flip_face_loop, \
+    simple_coin_flip_face_resign, \
+    NULL, \
+})