Add generic function to create and upload objects in OMERO.matlab
Add utility functions to create projects and datasets
Add utility functions to create plates and screens
Reload objects when linking them to parents
Explicitly state loaded objects are returned in the header
Fix error message for unfound projects
Refactor *Close into AbstractCloseableAmdServant (Fix #11074)

Changing the signature of preClose and postClose in
AbstractAmdServant to include an Ice.Current argument
(See 94fca87e891185b6ca4256512ef16812396d29df) left
ExporterI with an uncalled preClose method which in turn
left temp files dangling.

Adding `@Override` to the protected method would prevent
such errors in the future, but this refactoring goes a
step further and makes the methods abstract so that they
must be implemented.
Add OMERO_TEMPDIR to diagnostics output (See #11074)
Add missing closeable conversion
Syntactic adjustments from @mtbc
Provide SYSTEM priority thread executor for reload (See #11033)

Along with the other resource contention issues seen under 11033,
a number of imports performing stats calculation led to SM.reload()
blocking. Since this is called by getEventContext() all of the
joinSessions from OMERO.web were blocked, completely breaking the
client.

Now, a special `ExecutorService` is available for high-priority
threads. It will grow without bound, but threads will be cached
and reaped as necessary. A better implementation might try to
use a single thread pool, but save a few slots of system threads.
Fix DummyExecutor
Merge pull request #1317 from jburel/proxy-network-checkup

Proxy network checkup
Merge pull request #1318 from jburel/submit-failure-dev_4_4

Submit failure dev 4 4
Merge pull request #1285 from joshmoore/rebased/dev_4_4/11033-system-threads

Provide SYSTEM priority thread executor for reload (See #11033) (rebased onto dev_4_4)
Merge pull request #1261 from joshmoore/rebased/dev_4_4/11074-export-close

11074 export close (rebased onto dev_4_4)
Merge pull request #1176 from jburel/import-status-tb-dev-4-4

Import status tb dev 4 4
Merge pull request #1233 from sbesson/10637_matlab_create_objects

OMERO.matlab: add object creation functions (see #10637)
Merge pull request #1279 from jburel/orphan-folder-dev_4_4

Orphan folder dev 4 4
Merge pull request #1281 from jburel/viewer-issue-dev_4_4

Viewer issue dev 4 4