The plugin should support i-Code custom plugins

**Is your feature request related to a problem? Please describe.**
When using custom i-Code plugin for SonarQube, it is impossible to execute an i-Code custom plugin.

**Describe the solution you'd like**
The plugin for SonarQube should support call of custom i-Code plugins to run them on demand..

**Describe alternatives you've considered**
`none`

**Additional context**
`none`

No file, test, or entry point is named. Start by tracing the Java plugin’s current SonarQube analysis and execution flow, then determine how custom i-Code plugins should be invoked; done means a configured custom plugin can be run on demand.

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