[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/openjpeg/all/test_package/test_package.c

@@ -0,0 +1,12 @@
+#include <openjpeg.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+int main() {
+    printf("opj_has_thread_support: %d\n", opj_has_thread_support());
+    printf("opj_get_num_cpus: %d\n", opj_get_num_cpus());
+
+    return EXIT_SUCCESS;
+}