Feature Request: Add Diagnostics Logs Properties Fields to Input

I am looking at implementing a solution that uses shared blob storage for multiple applications, and there does not appear to be an easy way to extract the ApplicationName, InstanceID, etc. from the Application Log? The CSV formatted logs appear to import fine, it's the Append Blob logs (that are just .txt files) that do not appear to be imported with the proper header format.

To clarify, this is for Application Logs configured under an Application Service (Web Site), under Diagnostic Logs.
[example_app_log_txt.txt](https://github.com/Azure/azure-diagnostics-tools/files/2237169/example_app_log_txt.txt)

[example_app_log_csv.txt](https://github.com/Azure/azure-diagnostics-tools/files/2237173/example_app_log_csv.txt)