[refactoring] enhance Spring Boot version validation with quick fix to update

[martinlippert]

Each of the validation messages for Spring Boot versions (newer patch, minor, major version) should get a quick fix to execute the update automatically. When doing that, the updates should execute the corresponding recipes to switch the project (and the quick fix should make that very very clear).

• patch version: simple recipe to change the version in the pom.xml file - nothing else
• minor and major version: simple recipe to change the version in the pom.xml file - nothing else
• minor and major version: full conversion recipe to upgrade the whole project - all inclusive

This gives users the choice whether they want to change just the version in the pom file (for minor and major version changes) or execute the all-inclusive aggregated recipe to change the whole project.

If there is no aggregated recipe around for the specific version upgrade, only the simple one should show up.

[martinlippert]

Done.