Initial check in for single config tarcelense support

[prosenjitdhole]

This PR is related to #15.
This checkin is for support of

• Analyzing single config tracelens runs
• Compare two single config tracelens run

This checkin includes :

• run_tracelens_single_config.sh - To generate tracelense reports on a single config run
• process_gpu_timeline.py - To creat a single gpu mean/geomean timeline excel for a single config run. (This extra script is required as gpu time line data is dumped for each individual run. We will not require such a script for nccl data as they are collective in nature)
• combine_reports.py - To combine collective (nccl channel data over all ranks) and gpu_timeline summary of different runs
• add_comparison_sheet.py - To add gputime comparison on the combined gpu timeline excles
• add_collective_comparison_sheets.py - To add nccl comparison data on combined nccl runs
• create_final_report.py - To generate a combined report of a) combined and b) comparison data for both gpu timeline and nccl collective data
• create_final_plots.py - To create plots from the final report excel
• create_final_html.py - To create the html report from the plots
• html_report_config.py - Contains the template html and configuration of what plots to print
• run_full_analysis.py - Wrapper script To run all the above scripts in due order.

Note :

• These are the base scripts on which rccl_test will depend (future check in)
• Few script here might be similar to gemm_analysis scripts, but these are the base scripts and later we will modify gemm scripts to use these scripts.
• Initial submission of tracelens single config analysis, and fixes in … #15 will be closed as there are hard conflicts in rebasing to gemm script updates.

[oyazdanb]

please split this PR to smaller ones.

[prosenjitdhole]

This big change is split into smaller changes in #25, #26, #27, #28, #29

[prosenjitdhole]

Closing this PR as all the small PRs are merged.