Add first-class macOS build and launch support (#42)

* fix: fix GLFW video mode fallback on startup

* fix: fix GLFW mouse activation on startup

* feat: locate macOS game directory when launched from Finder

* feat: ask the user to choose a game directory if gamefiles could not be found

* feat: create an app bundle for macOS builds

* feat: resolve gamefiles inside or beside the app bundle

* fix: distinguish ARM64 Premake platforms

* fix: use libmpg123 pkg-config metadata

* feat: add Xcode support to Premake and CMake

* chore: ignore .DS_Store files

* fix: center mouse cursor when launching and quitting the game

* fix: address a TODO comment

* feat: bundle reVC gamefiles as runtime overrides

* feat: use macOS user directories for saves and settings

* refactor: store macOS game path in reVC.ini

* fix: make Xcode recognize the archive as a macOS app archive

* fix: enable Hardened Runtime for the Xcode app target

* fix: support CMake’s Xcode generator on macOS

* build: remove stale libsndfile linkage

* build: make the app bundle self-contained

* fix: prevent buffer overflow with long game directory paths

* chore: add application category to Info.plist

* fix: omit missing Homebrew OpenAL search paths when using MacPorts

* refactor: move game path declarations to FileMgr header

* build: include the LICENSE file in the app bundle

res/macos/Info.plist

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>reVC</string>
+	<key>CFBundleIconFile</key>
+	<string>reVC.icns</string>
+	<key>CFBundleIdentifier</key>
+	<string>io.github.mrxenginner.reVC</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>reVC</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.12</string>
+	<key>LSMinimumSystemVersionByArchitecture</key>
+	<dict>
+		<key>arm64</key>
+		<string>11.0</string>
+		<key>x86_64</key>
+		<string>10.12</string>
+	</dict>
+	<key>NSHighResolutionCapable</key>
+	<true/>
+	<key>LSApplicationCategoryType</key>
+	<string>public.app-category.games</string>
+</dict>
+</plist>