アイコンリソースの追加およびプロジェクトスキーム名の変更によりMacアプリとしての体裁を強化

- アプリのアイコン画像と対応するContents.jsonを新規追加し、Mac向けに各種解像度をサポート
- プロジェクトのスキーム名とターゲット名を「OreCalendarMac」から「OreCalendar」へ統一
- Makefileのビルドターゲットも新スキーム名に合わせて修正

Makefile

@@ -5,4 +5,4 @@ all: build
 generate:
 	xcodegen generate
 build: generate
-	xcodebuild -scheme OreCalendarMac -destination 'platform=macOS' build
+	xcodebuild -scheme OreCalendar -destination 'platform=macOS' build

Resources/Media.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,61 @@
+{
+  "images" : [
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "filename" : "cal 2.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "filename" : "cal 1.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "filename" : "cal.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Resources/Media.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

project.yml

@@ -3,16 +3,16 @@ options:
   deploymentTarget:
     macOS: "26.0"
 schemes:
-  OreCalendarMac:
+  OreCalendar:
     build:
       targets:
-        OreCalendarMac: all
+        OreCalendar: all
     run:
       config: Release
     archive:
       config: Release
 targets:
-  OreCalendarMac:
+  OreCalendar:
     platform: macOS
     type: application
     sources: