Enable Header Credentials / Update to Gradle 6

[acidbee]

#19 Feature Request: Support HttpHeaders in Server Configuration

• Added support for header credentials
  • header credentials must be place under settings->servers->server->configuration->httpHeaders->property in the settings.xml
  • basic authentication is preferred if both basic auth credential and http header credential types are provided.
• Maven dependency versions updated to 3.6.3
• Updated Gradle wrapper to 6.1.1 (support for Java 11)
• Build-scan plugin deprecated in Gradle 6 in favor of gradle.enterprise plugin. This has been transitioned.
• Updated build config and settings files to Kotlin
• Updated readme to reflect supported credential types

[sethrylan]

@mark-vieira, is there any update on this PR? Support for httpHeaders would be great for Gitlab package registries.

[DevSrSouza]

For anyone that want to use this feature: @acidbee publish it into gradle plugins repository

https://plugins.gradle.org/plugin/co.coxes.maven-settings-gitlab