GitLab

[Doc] Update documentation structure and content: add overview section, revise project name, and change theme to Furo (#39)

* [Doc] fix installation.rst

* [Doc] fix installation

* [Doc] update installation.md and readme

* solve conflicts

* change readme

* fix installation.rst

* fix readme

* fix installation

* [Doc] Use sphinx to generate docs.

* [Doc] Fix a bug on tlcpack_sphinx_addon.

* [Doc] Fix linting issues.