Refactor, move sex and yearofbirth comparison into

[javier-gracia-tabuenca-tuni]

add to R6 object 'CohortTableHandler' the following public functions

here

HadesExtras/R/CohortTableHandler.R

Line 391 in a571b37

getCohortsOverlap = function() {

• getNumberOfSubject(cohortId)
• getNumberOfOverpapingSubjects(cohortId1, cohortId2)
• getSexFisherTest(cohortId1, cohortId2)
• getYearOfBirthTTest(cohortId1, cohortId2)

These functions include the codes from for example
https://github.com/FINNGEN/CO2AnalysisModules/blob/a545c225ef59a787829fd65ba9d1072f56902e99/R/mod_analysisSettings_TimeCodeWAS.R#L205C4-L220C1

add also a test for each of these functions

this can be a good starting template
https://github.com/FINNGEN/HadesExtras/blob/a571b3772877f3cbf22313e4b277eb4e5777ef94/tests/testthat/test-CohortTableHandler.R#L283C1-L308C3