* feat(scheduled-pipeline): makes scheduled pipelines runnable

* Update src/main/java/org/gitlab4j/api/PipelineApi.java

Co-authored-by: Jérémie Bresson <dev@jmini.fr>

* fix(scheduled-pipeline): change post()-call

* Update src/main/java/org/gitlab4j/api/PipelineApi.java

Co-authored-by: Jérémie Bresson <dev@jmini.fr>

* Add missing import

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Co-authored-by: Jérémie Bresson <dev@jmini.fr>
Co-authored-by: Jeremie Bresson <jeremie.bresson@unblu.com>
Co-authored-by: Ruben Vitt <dev@rubeen.one>

* Add ExternalStatusCheckApi

Fixes #919

* Add ExternalStatusCheckEvent

* Fix javadoc

There was not chance of throwing checked exception GitLabApiException  from given three methods. I have removed them to make user code using given methods easier to read.

Co-authored-by: Erkan <erkanerkisi>

Co-authored-by: Jérémie Bresson <dev@jmini.fr>

change projectIdOrPath as Object type

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Co-authored-by: jason <jason.irwin@idoxgroup.com>

Co-authored-by: Matteo Marras <matteo.marras@ti8m.ch>

Co-authored-by: Vladimir Krumov <vladimir.krumov@paysafe.com>

`GET /groups?order_by=similarity` is supported but not available in the
high level API
https://gitlab.com/gitlab-org/gitlab/-/issues/332889

Settings having only a single Type caused a NullPointer when
printing the allowed types.

Improves #818

Fixed de-serialization of MembershipSourceType by letting the JacksonJsonEnumHelper know that the first letter should be capitalized

Actually fetch all the memberships with UserAPI.getMemberships() and also provide a pager based method for lazy fetching

Use case: oauth2 access limited time tokens which should be updated on regular basis. Supplier allows us to move refresh logic outside client.
Use specified setter to set up supplier after gitlab api object creation.