Jake Dallimore 40af893af5 MDL-75650 core: add oauth2 auth server config reader ...

Simple JSON reader which takes an issuer and reads its metadata. The
class is aware of request-centric rules, such as:
- The position of the well known suffix in the URL (per RFC8414)
- The requirement to have HTTPS auth server issuer URL
- The validity of query strings, paths and fragments in the auth server
issuer URL
,but makes no attempt to validate the config JSON returned.

2023-03-08 08:48:20 +08:00

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discovery

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