add submodule sdl3

Author: AiraYumi

autobuild.xml

@@ -1,6 +1,69 @@
 <?xml version="1.0" ?>
 <llsd>
 <map>
+    <key>installables</key>
+    <map>
+      <key>SDL3</key>
+      <map>
+        <key>platforms</key>
+        <map>
+          <key>linux64</key>
+          <map>
+            <key>archive</key>
+            <map>
+              <key>hash</key>
+              <string>3389b906c574457d36fec4cf4bfd83f182d2e482</string>
+              <key>hash_algorithm</key>
+              <string>sha1</string>
+              <key>url</key>
+              <string>https://github.com/AiraYumi/3p-sdl3/releases/download/v3.2.4/SDL3-3.2.4-linux64-13232355240.tar.zst</string>
+            </map>
+            <key>name</key>
+            <string>linux64</string>
+          </map>
+          <key>darwin64</key>
+          <map>
+            <key>archive</key>
+            <map>
+              <key>hash</key>
+              <string>0c15e38e0592ae4898341bceb00e321018e63461</string>
+              <key>hash_algorithm</key>
+              <string>sha1</string>
+              <key>url</key>
+              <string>https://github.com/AiraYumi/3p-sdl3/releases/download/v3.2.4/SDL3-3.2.4-darwin64-13232355240.tar.zst</string>
+            </map>
+            <key>name</key>
+            <string>darwin64</string>
+          </map>
+          <key>windows64</key>
+          <map>
+            <key>archive</key>
+            <map>
+              <key>hash</key>
+              <string>0d6729fdebf9ce79273baef8b02d0e474c7acba3</string>
+              <key>hash_algorithm</key>
+              <string>sha1</string>
+              <key>url</key>
+              <string>https://github.com/AiraYumi/3p-sdl3/releases/download/v3.2.4/SDL3-3.2.4-windows64-13232355240.tar.zst</string>
+            </map>
+            <key>name</key>
+            <string>windows64</string>
+          </map>
+        </map>
+        <key>license</key>
+        <string>lgpl</string>
+        <key>license_file</key>
+        <string>LICENSES/SDL3.txt</string>
+        <key>copyright</key>
+        <string>Copyright (C) 1997-2022 Sam Lantinga (slouken@libsdl.org)</string>
+        <key>version</key>
+        <string>3.2.4</string>
+        <key>name</key>
+        <string>SDL2</string>
+        <key>description</key>
+        <string>Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.</string>
+      </map>
+    </map>
     <key>package_description</key>
     <map>
       <key>copyright</key>