tests/fate: Add test for overlay filter using yuv444p10 output format

tests/fate/filter-video.mak

@@ -213,7 +213,7 @@ fate-filter-vstack: CMD = framecrc -c:v pgmyuv -i $(SRC) -c:v pgmyuv -i $(SRC) -
 FATE_FILTER_OVERLAY-$(call FILTERDEMDEC, SCALE OVERLAY, IMAGE2, PGMYUV) += fate-filter-overlay
 fate-filter-overlay: CMD = framecrc -c:v pgmyuv -i $(SRC) -c:v pgmyuv -i $(SRC) -filter_complex_script $(FILTERGRAPH)
 
-FATE_FILTER_OVERLAY-$(call FILTERDEMDEC, SPLIT SCALE PAD OVERLAY, IMAGE2, PGMYUV) += $(addprefix fate-filter-overlay_, rgb yuv420 yuv420p10 nv12 nv21 yuv422 yuv422p10 yuv444)
+FATE_FILTER_OVERLAY-$(call FILTERDEMDEC, SPLIT SCALE PAD OVERLAY, IMAGE2, PGMYUV) += $(addprefix fate-filter-overlay_, rgb yuv420 yuv420p10 nv12 nv21 yuv422 yuv422p10 yuv444 yuv444p10)
 fate-filter-overlay_%: CMD = framecrc -auto_conversion_filters -c:v pgmyuv -i $(SRC) -filter_complex_script $(FILTERGRAPH)
 fate-filter-overlay_yuv420: CMD = framecrc -c:v pgmyuv -i $(SRC) -filter_complex_script $(FILTERGRAPH)
 fate-filter-overlay_%p10: CMD = framecrc -auto_conversion_filters -c:v pgmyuv -i $(SRC) -filter_complex_script $(FILTERGRAPH) -pix_fmt $(@:fate-filter-overlay_%=%)le -frames:v 3

tests/filtergraphs/overlay_yuv444p10

@@ -0,0 +1,5 @@
+sws_flags=+accurate_rnd+bitexact;
+split [main][over];
+[over] scale=88:72, format=yuv444p10, pad=96:80:4:4 [overf];
+[main] format=yuv444p10 [mainf];
+[mainf][overf] overlay=240:16:format=yuv444p10

tests/ref/fate/filter-overlay_yuv444p10

@@ -0,0 +1,8 @@
+#tb 0: 1/25
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 352x288
+#sar 0: 0/1
+0,          0,          0,        1,   608256, 0xc5ba4285
+0,          1,          1,        1,   608256, 0x3066fd50
+0,          2,          2,        1,   608256, 0xdb8e68a8