GitLab

**Description**
Add system config info for result collection

**Description**
Add document for SuperBench YAML config file.

Add docs on:
* Docker image tag list
* Build image and run container instructions

**Description**
Add Executor and Benchmarks design doc

**Major Revision**
- Add Executor design doc
- Add Benchmarks design doc

* Add introduction and release documents.
* Fix some typos in documents.

* Initialize SuperBench website.
* Add GitHub Actions for automatically build and publish.