chore(documentation): documentation and manuals for ZITADEL (#710)

* chore: cleanup old docs folder

* remove docs path trigger

* wip docs structure

* chore: ignore site changes in ci

* add manuals route

* new structure

* structure

* Use correct title

* remove trigger for code scan for static site generator

* change names

* add lorem ipsum to test styling

* use h3 to deeplink

* add site to dependabot

* lint readme.md

* remove not needed file

* ignore site on pull request code scan

* add initial contrib

* Minor correction

* Added section Developer & Integration

* Changed link list layout, added labels, added translations

* Added missing <li> tags

* Added correct link to section Developer & Integration

* Fixing list style

* Overhauling description texts and translations

* outline

* teaser go

* outline

* wip

* rework

* wip

* wip

* wip

* hop

* wip

* first draft for "administrate" done

* init outline

* fix deploy step

* lint

* commit wip

* commit wip

* md lint

* Link

* fix: path to edit (#711)

* wip

* wip

* wip

* what are...

* use only features

* wip docs

* Update 00-user.en.md

* project

* uppercase en

* wip

* wip

* wip

* policies rework

* improve text

* correct typo

* update readme

* correct styling

* add link to docs guides

* make the linter happy

* rename

* wip

* move api to own file

* correct links and lint

* wip roles and integration

* add pkce

* reduce padding and margin

* wip scope and claims

* wip claim & scopes

* make the linter happy

* insert links where possible

* wip

* wip roles & providers

* Update README.md

* Update 00-user.en.md

* minor text improvements

* use master branch to deploy

* use proper ci file

* Apply suggestions from code review

Co-authored-by: Fabi <38692350+fgerschwiler@users.noreply.github.com>

Co-authored-by: Matthias M. Schneider <mati@matimax.info>
Co-authored-by: Max Peintner <max@caos.ch>
Co-authored-by: Fabi <38692350+fgerschwiler@users.noreply.github.com>

site/docs/develop/03-administration.en.md

@@ -0,0 +1,15 @@
+---
+title: Admin API
+description: …
+---
+
+### Administration aka Admin
+
+This API is intended to configure and manage the IAM itself.
+
+| Service | URI                                                                                                                             |
+|:--------|:--------------------------------------------------------------------------------------------------------------------------------|
+| REST    | [https://api.zitadel.ch/admin/v1/](https://api.zitadel.ch/admin/v1/)                                                            |
+| GRPC    | [https://api.zitadel.ch/caos.zitadel.admin.api.v1.AdminService/](https://api.zitadel.ch/caos.zitadel.admin.api.v1.AdminService) |
+
+[Latest API Version](https://github.com/caos/zitadel/blob/master/pkg/grpc/admin/proto/admin.proto)