Refactor/config setup

[andrzej-janczak]

I noticed some parts in cmd/configsetup/setup.go are copy pasted.

Also I think now the structure is clearer and simpler to undsetand - like e.g. the declarations of tools is on top.

I asked about this "strange" code like type pylintConfigCreator struct{} and interface
empty struct, he came up with this:

Current Approach Benefits
Zero magic - everything is explicit
Easy to debug - no hidden method calls
Tool independence - each tool is self-contained
Simple to understand - no need to understand composition patterns
Easy to test - mock individual creators without dependencies
The current design follows Go's philosophy of "A little copying is better than a little dependency" and prioritizes clarity over cleverness! 🎯

Looks like this is the standard way of GO...

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.17%	✅ 33.76%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (c691b6d)	5419	1406	25.95%
Head commit (68717ea)	5364 (-55)	1401 (-5)	26.12% (+0.17%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#146)	234	79	33.76%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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