添加 Windows on Arm 平台的支持 (#1679)

* Add Minecraft 1.6~1.18.2 support for windows-arm64

* Prompt at startup on non-x86 platforms

* Automatically download JavaFX on windows-arm64

* Update PLATFORM.md

HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java

@@ -69,12 +69,6 @@ public final class Launcher extends Application {
                 Main.showWarningAndContinue(i18n("fatal.illegal_char"));
             }
 
-            if (!Architecture.CURRENT_ARCH.isX86()
-                    && !(OperatingSystem.CURRENT_OS == OperatingSystem.OSX && Architecture.CURRENT_ARCH == Architecture.ARM64)
-                    && ConfigHolder.globalConfig().getAgreementVersion() < 1) {
-                Main.showWarningAndContinue(i18n("fatal.unsupported_platform"));
-            }
-
             // runLater to ensure ConfigHolder.init() finished initialization
             Platform.runLater(() -> {
                 // When launcher visibility is set to "hide and reopen" without Platform.implicitExit = false,