New refactors for getter

[FMorschel]

Today we have the Extract Method refactor and a Convert Getter to Method rewrite. This request is actually a two part one:

• If the extracted content has no need for local variables, suggest a new Extract Getter
• If a method has no parameters and returns something other than void suggest a new Convert Method to Getter

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We could also think about a similar requests for setters if the return type is void and it takes one parameter only, but that may be something that happens less frequently.

Any suggestions for this are appreciated.