feat(jans-config-api): Search custom script by name

[maduvena]

Description

• Development target issue
  Develop get-config-script-by-name on the same lines as this
  
  This feature is more likely to be used than get-by-inum
• Implementation Details
  on the same lines as this
  Note: script name is a unique field

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Document the changes

• Update developer documentation

[pujavs]

@maduvena , this has been implemented in #1802
Implemented: GET /jans-config-api/api/v1/config/scripts/name/{name}

Example: GET /config/scripts/name/resource_owner_password_credentials_example

Testing:

[pujavs]

Closing this issue as the feature as been implemented