* SAML identity provider docs.
SAML IdP documentation has been added.
* formatting
* spelling
* Zac's and Roman's feedback.
* Valid config.json.
* Linting updates.
* usr Var component
Adding as a unique commit in case it's not desired
* align output with object name
* Roman's feedback, add in a section for disabling the IdP.
* copy edits
* SAML Grafana guide (#22545)
* init Grafana SAML guide
* respond to review feedback
* Correct entity provider to identity provider.
* Note that HSM is not currently supported.
* Fix link.
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Co-authored-by: alexfornuto <alex.fornuto@goteleport.com>