Modularize the script to single script which works for all the Decoders and encoders

Add Support Video Decode Testcases for H265
Add Support Video Decode Testcases for VP9
Add Support Video Encode Testcases for H265

Signed-off-by: Abhishek Bajaj <[email protected]>

Author: abbajaj806

Runner/suites/Multimedia/Video/Video_V4L2_Runner/run.sh

@@ -169,7 +169,7 @@ guess_codec_from_cfg() {
         fi
     done
     for tok in hevc h265 h264 av1 vp9 vp8 mpeg4 mpeg2 h263 avc; do
-        if grep -qi "[\"'_[:space:]]$tok[\"'_[:space:]]" "$cfg" 2>/dev/null; then
+		if grep -qi "[\"'_[:space:]]${tok}[\"'_[:space:]]" "$cfg" 2>/dev/null; then
             printf '%s\n' "$tok"
             return
         fi