[DO-971] ffmpeg recipe with requirements (!9)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/9

recipes/vaapi/all/test_package/test_package.c

@@ -0,0 +1,38 @@
+#include <va/va.h>
+#include <va/va_x11.h>
+
+#include <X11/Xlib.h>
+
+#include <stdio.h>
+
+int main()
+{
+    VADisplay va_display;
+    VAStatus status;
+    int major, minor;
+    Display * display = XOpenDisplay(NULL);
+    if (!display)
+    {
+        printf("XOpenDisplay failed!\n");
+        return 0;
+    }
+    va_display = vaGetDisplay(display);
+    if (!va_display)
+    {
+        XCloseDisplay(display);
+        printf("vaGetDisplay failed\n");
+        return 0;
+    }
+    status = vaInitialize(va_display, &major, &minor);
+    if (status == VA_STATUS_SUCCESS)
+        printf("va version %d.%d\n", major, minor);
+    else
+    {
+        XCloseDisplay(display);
+        printf("vaInitialize failed\n");
+        return 0;
+    }
+    vaTerminate(va_display);
+    XCloseDisplay(display);
+    return 0;
+}