Java generator does not include import for dictionary models

[jonaslagoni]

modelina/src/generators/java/JavaConstrainer.ts

Line 238 in 1239c9a

return `Map<${constrainedModel.key.type}, ${constrainedModel.value.type}>`;

needs to import https://docs.oracle.com/javase/8/docs/api/java/util/Map.html

This can be done through the dependencyManager argument as seen here:

modelina/src/generators/python/PythonConstrainer.ts

Line 20 in 1239c9a

dependencyManager.addDependency('from typing import Any');

First raised in #1885