Import of the watch repository from Pebble

tests/overrides/font_compression/README.md

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+The files in this directory are used to override the generated 'resource\_ids.auto.h' (etc.) so 
+that we can use 'fixtures/font\_compression/system\_resources.pbpack'.
+
+'fixtures/font\_compression/system\_resources.pbpack' was generated by adding the following stanza
+to resources/normal/base/resource\_map.json:
+
+    {
+      "type": "font",
+      "name": "GOTHIC_18_COMPRESSED",
+      "file": "normal/base/ttf/18Cond.ttf",
+      "compatibility": "2.7",
+      "extended": true,
+      "compress": "RLE4"
+    },
+
+and then rebuilding system\_resources.pbpack. See tools/update\_test\_system\_pbpack.sh for which
+files need to be updated.

tests/overrides/font_compression/board/board.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#define PLATFORM_TINTIN 1
+
+typedef enum {
+  CC2564A = 0,
+  CC2564B,
+} BluetoothController;
+
+typedef struct {
+  const uint8_t backlight_on_percent; // percent of max possible brightness
+} BoardConfig;
+
+typedef struct {
+  const BluetoothController controller;
+} BoardConfigBTCommon;
+
+typedef struct {
+  const uint8_t low_power_threshold;
+} BoardConfigPower;
+
+static const BoardConfig BOARD_CONFIG = {
+  .backlight_on_percent = 100,
+};
+
+static const BoardConfigBTCommon BOARD_CONFIG_BT_COMMON = {
+  .controller = CC2564A,
+};
+
+static const BoardConfigPower BOARD_CONFIG_POWER = {
+  .low_power_threshold = 5
+};