Remove fragments

Description

Completely removes Fragment, to be replaced with one ProjectEntity. The JobSplitter builds up one ProjectEntity. The Checker works the same as before, instead of using a list of fragments, it runs the runStatic method on the children of the ProjectEntity, all of which are FileEntitys.

_{^{All is well, fragments are doodoo}}

Resolves #168 (closed)

Changes

• Use only one ProjectEntity in all analyzers

Additions

• Marks Java tests as test entities

Test and Review

To be filled in by the reviewers

• All of the methods are commented to expectation

• The methods are tested to satisfaction

• There are no unnecessary files present in the MR

• The continuous integration has no problems with the MR

• The MR is filled in as requested (including labels, milestones, and reviewers)

• The documentation is up-to-date

• All nullable parameters are marked as such