Add (unfinished) SDL_timer.inc

For example code

Author: Free-Pascal-meets-SDL-Website

units/SDL3.pas

@@ -88,6 +88,7 @@ interface
 {$I SDL_surface.inc}                      // 3.1.6-prev
 {$I SDL_video.inc}                        // 3.1.6-prev
 {$I SDL_render.inc}                       // 3.1.6-prev
+{$I SDL_timer.inc}                        // 3.1.6-prev (unfinished)
 
 
 implementation

units/SDL_timer.inc

@@ -0,0 +1,40 @@
+{
+  This file is part of:
+
+    SDL3 for Pascal
+    (https://github.com/PascalGameDevelopment/SDL3-for-Pascal)
+    SPDX-License-Identifier: Zlib
+}
+
+{*
+ * Wait a specified number of milliseconds before returning.
+ *
+ * This function waits a specified number of milliseconds before returning. It
+ * waits at least the specified time, but possibly longer due to OS
+ * scheduling.
+ *
+ * \param ms the number of milliseconds to delay.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.1.3.
+  }
+procedure SDL_Delay(ms: cuint32); cdecl;
+  external SDL_LibName {$IFDEF DELPHI} {$IFDEF MACOS} name '_SDL_Delay' {$ENDIF} {$ENDIF};
+
+{*
+ * Wait a specified number of nanoseconds before returning.
+ *
+ * This function waits a specified number of nanoseconds before returning. It
+ * waits at least the specified time, but possibly longer due to OS
+ * scheduling.
+ *
+ * \param ns the number of nanoseconds to delay.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.1.3.
+  }
+procedure SDL_DelayNS(ns: cuint64); cdecl;
+  external SDL_LibName {$IFDEF DELPHI} {$IFDEF MACOS} name '_SDL_DelayNS' {$ENDIF} {$ENDIF};
+