Add implementation of sort command in DG

[siqirua]

No description provided.

[codecov]

Codecov Report

Merging #188 (9d5c0bb) into master (7d612ca) will increase coverage by 11.64%.
Report is 40 commits behind head on master.
The diff coverage is 53.57%.

@@              Coverage Diff              @@
##             master     #188       +/-   ##
=============================================
+ Coverage     57.31%   68.96%   +11.64%     
- Complexity      718      863      +145     
=============================================
  Files           126      126               
  Lines          3238     3293       +55     
  Branches        375      385       +10     
=============================================
+ Hits           1856     2271      +415     
+ Misses         1203      824      -379     
- Partials        179      198       +19     

Files	Coverage Δ
...edu/modulight/logic/commands/AutoGradeCommand.java	96.72% <100.00%> (+96.72%)	⬆️
src/main/java/seedu/modulight/model/UserPrefs.java	77.77% <100.00%> (+5.55%)	⬆️
...modulight/storage/JsonSerializableStudentBook.java	100.00% <ø> (+100.00%)	⬆️
...in/java/seedu/modulight/model/student/Student.java	97.18% <50.00%> (-1.39%)	⬇️
...edu/modulight/model/studentscore/StudentScore.java	82.81% <0.00%> (+2.81%)	⬆️
...ulight/model/studentscore/ScoreMatchPredicate.java	92.85% <0.00%> (-4.16%)	⬇️
.../modulight/storage/JsonAdaptedGradedComponent.java	89.18% <50.00%> (+89.18%)	⬆️
...edu/modulight/storage/JsonAdaptedStudentScore.java	56.89% <23.80%> (+56.89%)	⬆️

... and 19 files with indirect coverage changes