website/docs: add content about bindings

[tanberry]

DRAFT

This PR adds a new topic about Bindings, with an overview page and a page that will list all of the How Tos (bind a binding to stage, to a policy, to a group, etc).

Related to #11587

If applicable

• The documentation has been updated
• The documentation has been formatted (make website)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.62%. Comparing base (da73d4f) to head (0be6ede).
Report is 12 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11787      +/-   ##
==========================================
+ Coverage   92.55%   92.62%   +0.06%     
==========================================
  Files         760      760              
  Lines       37714    37732      +18     
==========================================
+ Hits        34907    34950      +43     
+ Misses       2807     2782      -25     

Flag	Coverage Δ
e2e	49.28% <ø> (+0.12%)	⬆️
integration	24.94% <ø> (+<0.01%)	⬆️
unit	90.13% <ø> (+<0.01%)	⬆️

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[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-0be6eded705c1535ee97353b8f7a2dcf2f6d4953
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

For arm64, use these values:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-0be6eded705c1535ee97353b8f7a2dcf2f6d4953-arm64
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-0be6eded705c1535ee97353b8f7a2dcf2f6d4953

For arm64, use these values:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-0be6eded705c1535ee97353b8f7a2dcf2f6d4953-arm64

Afterwards, run the upgrade commands from the latest release notes.