refactor recursiveScan function

[Ritish134]

Breakdown of recursiveScan function: #497

• Created initializeReport function to initialize and configure the malcontent.Report object.
• I think Instead of relying on sync.Once to ensure that a match (or miss) is processed only once, I Created setMatchHandling function to do that, basically in this :
  Only the first goroutine to send a result to this channel succeeds due to the buffered capacity of 1.
  matchChan := make(chan matchResult, 1)

context.WithCancel is used to signal all concurrent goroutines to stop further processing once a match is found.

Let me know your thoughts on this @tstromberg

• the logic for handling OCI image extraction (including the imageURI and ociExtractPath variables) moved into the helper function prepareScanPath.

• The call to findFilesRecursively is now encapsulated within processPaths. This function is responsible for finding files and managing their subsequent processing.

• Concurrency Handling logic moved to processWithConcurrency

• File-specific processing logic into a separate function (processSingleFile)

• storeFileReport to store individual file reports and
  storeArchiveReports For storing multiple file reports from a sync.Map