Publish `utbot-gradle` to the Gradle Plugin Portal

[mmvpm]

Description

We should publish utbot-gradle plugin to the Gradle Plugin Portal to use it in any project.

The following steps are required:

• Register a utbot account on plugins.gradle.org
• Get API keys
• Publish our gradle plugin
• Wait for approval

[mmvpm]

Fields to fill in:

• website = 'https://www.utbot.org/'
• vcsUrl = 'https://github.com/UnitTestBot/UTBotJava/'
• displayName = 'UnitTestBot gradle plugin'
• description = 'The gradle plugin for generating tests and creating SARIF reports based on UnitTestBot'
• tags = ['java', 'unit-testing', 'tests-generation', 'sarif']

[mmvpm]

Plugin was published to https://plugins.gradle.org/plugin/org.utbot.gradle.plugin