Samples - Multi Threaded Multi FIles (#255)

* adding new sample for decoding mulitple files on multiple threads

* threads work ; no decoding yet

* working version

* code clean up

* review comments

* removing spaces

* review comments

* fps cal + name changes for files

* code clean up

* update readme

* update readme

* remove spaces

* change to lambda functions

* changes for using reconfig

* adding dumping of yuv frames + review comments

* review comments

* remove extra lines/spaces

* adding struct for decoder info

* make separate decoders for 8 & 10bit

* code clean up

* addign reset for Saving frames

* review comments

* fixes dump issue for new file

* cmake update for threads

* support for avc

* name change for sample

* cmake soource name change

* readme update

* fixing typo in readme

---------

Co-authored-by: Aryan Salmanpour <aryan.salmanpour@amd.com>

[ROCm/rocdecode commit: ce3ebadaab]

projects/rocdecode/utils/rocvideodecode/roc_video_dec.cpp

@@ -966,6 +966,13 @@ void RocVideoDecoder::SaveFrameToFile(std::string output_file_name, void *surf_m
     }
 }
 
+void RocVideoDecoder::ResetSaveFrameToFile() {
+  if (fp_out_) {
+        fclose(fp_out_);
+        fp_out_ = nullptr;
+    }
+}
+
 void RocVideoDecoder::InitMd5() {
     md5_ctx_ = av_md5_alloc();
     av_md5_init(md5_ctx_);