* Created the first level of pages for the User guide, from Analog Wiki:
* Architecture
* Build HDL
* Customize HDL
* Docs guidelines (edited)
* Git repository
* HDL coding guideline (edited)
* Introduction
* IP cores
* Porting projects (edited)
* Releases
* Third party
* Moved hdl_coding_guideline under user_guide and changed extension to rst
* Deleted hdl_pr_process.md
* docs_guideline: Add reference to project doc template
* porting_project:
Signed-off-by: Iulia Moldovan <Iulia.Moldovan@analog.com>
Iulia Moldovan