Replace Orika mapping with MapStruct

[axlewin]

This removes the old Orika converters & automappers and replaces them with MapStruct mappings.

Most of the mappings just define a source & target type and let the MapStruct auto-implementations handle the rest. Where the target class is unambiguous (e.g. DTO <-> DO mappings), using these mappings is then as simple as calling map(source) (or copy(source) if the source & target classes are the same); the target class no longer needs to be specified. Where there is ambiguity in which class to map to (e.g. map(ContentDTO)), the default map method does still need to have a target class passed in to know which mapping to delegate to. In the case of mapping an object to a String (mapContentSummaryDTOtoString), the implementation is hardcoded rather than autogenerated; see mapstruct/mapstruct#584.

The mappers are split roughly according to the kind of objects they map, but the MainMapper interface is used to provide a mapper object in most cases. For consistency, one of the new mappers is called ContentMapper, hence the existing ContentMapper has been renamed (to ContentSubclassMapper).

Mappings are provided for all of the conversions that we currently need. These are not comprehensive, and there are likely other mappings that will be needed at some point that should be added now.

As discussed, there are no new unit tests introduced by this PR. The existing integration tests should cover the usage of most of the new mappings but there may be cases that are missed.

[codecov]

Codecov Report

❌ Patch coverage is 55.81395% with 57 lines in your changes missing coverage. Please review.
✅ Project coverage is 36.46%. Comparing base (09e797d) to head (0bb6673).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...a/uk/ac/cam/cl/dtg/util/mappers/ContentMapper.java	38.09%	12 Missing and 1 partial ⚠️
...cam/cl/dtg/segue/api/managers/QuestionManager.java	15.38%	11 Missing ⚠️
...java/uk/ac/cam/cl/dtg/util/mappers/UserMapper.java	33.33%	6 Missing and 4 partials ⚠️
.../cl/dtg/segue/api/managers/UserAccountManager.java	69.23%	4 Missing ⚠️
.../java/uk/ac/cam/cl/dtg/isaac/api/EventsFacade.java	66.66%	3 Missing ⚠️
...am/cl/dtg/segue/dao/content/GitContentManager.java	84.21%	3 Missing ⚠️
...tg/util/mappers/UnimplementedMappingException.java	0.00%	3 Missing ⚠️
...dtg/isaac/dao/PgQuizAttemptPersistenceManager.java	33.33%	2 Missing ⚠️
...e/configuration/SegueGuiceConfigurationModule.java	33.33%	2 Missing ⚠️
...c/cam/cl/dtg/segue/etl/ETLConfigurationModule.java	0.00%	2 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #720      +/-   ##
==========================================
- Coverage   37.22%   36.46%   -0.77%     
==========================================
  Files         536      530       -6     
  Lines       23706    23560     -146     
  Branches     2857     2823      -34     
==========================================
- Hits         8825     8590     -235     
- Misses      14003    14104     +101     
+ Partials      878      866      -12     

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[github-advanced-security]

CodeQL found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.