ship CMakePresets.json instead of copying a template

Co-Authored-By: Grok 4.6 <noreply@x.ai>

CMakePresets.json

@@ -0,0 +1,61 @@
+{
+  "version": 3,
+  "cmakeMinimumRequired": {
+    "major": 3,
+    "minor": 20,
+    "patch": 0
+  },
+  "configurePresets": [
+    {
+      "name": "base",
+      "hidden": true,
+      "description": "Applications is JA2|JA2MAPEDITOR|JA2UB|JA2UBMAPEDITOR|empty(all 4); override CMAKE_RUNTIME_OUTPUT_DIRECTORY in CMakeUserPresets.json to debug another install.",
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/build/${presetName}",
+      "architecture": {
+        "value": "x86",
+        "strategy": "external"
+      },
+      "cacheVariables": {
+        "CMAKE_RUNTIME_OUTPUT_DIRECTORY": "${sourceDir}/gamedir"
+      }
+    },
+    {
+      "name": "msvc",
+      "hidden": true,
+      "inherits": "base",
+      "vendor": {
+        "microsoft.com/VisualStudioSettings/CMake/1.0": {
+          "hostOS": [ "Windows" ],
+          "intelliSenseMode": "windows-msvc-x86"
+        }
+      }
+    },
+    {
+      "name": "msvc-relwithdebinfo",
+      "inherits": "msvc",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "RelWithDebInfo"
+      }
+    },
+    {
+      "name": "msvc-debug",
+      "inherits": "msvc",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "msvc-release",
+      "inherits": "msvc",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    }
+  ],
+  "buildPresets": [
+    { "name": "msvc-relwithdebinfo", "configurePreset": "msvc-relwithdebinfo" },
+    { "name": "msvc-debug", "configurePreset": "msvc-debug" },
+    { "name": "msvc-release", "configurePreset": "msvc-release" }
+  ]
+}