GitLab

* refactor nn-Meter multi-trial to adapt new structure of nn-Meter

* add github repo link of nn-Meter

* refine nn-Meter API and add nn-meter in README.md

Co-authored-by: Scarlett Li <39592018+scarlett2018@users.noreply.github.com>
Co-authored-by: kvartet <48014605+kvartet@users.noreply.github.com>
Co-authored-by: --help <xyru1999@gmail.com>

Co-authored-by: Scarlett Li <39592018+scarlett2018@users.noreply.github.com>
Co-authored-by: Yuge Zhang <Yuge.Zhang@microsoft.com>

Co-authored-by: Lijiao <Lijiaoa@outlook.com>
Co-authored-by: kvartet <48014605+kvartet@users.noreply.github.com>

* fix broken link in home page

* fix broken link in zh home page

Co-authored-by: kvartet <kvartet>

* Replace all v1.7 with v1.8

* Add v1.8 release note

* Change PAI into OpenPAI

* Update Release.md

* Refine relase note

* Update date of release
Co-authored-by: QuanluZhang <z.quanluzhang@gmail.com>

* Improve docs

* All using # to start

* uploaded -> excluded

* Set versionCheck default to true

* Add .nniignore example

* Rename training service docs

* Update training service docs

* Fix step numbering

* Resolve comments

* Fix typo

* Resolve comments

* Fix broken link