feat: add priority on DataFlowController registration

[ndr-brt]

What this PR changes/adds

Add priority on DataFlowController registration

Why it does that

to permit having multiple DataFlowControllers that could be chosen for a particular transfer, and having other used as fallback.
This is useful when there's, for example, the ProviderPushDataFlowController that pretty much can transfer anything but there's a specific DataFlowController for a particular source-todestination transfer that will be chosen first if the priority set is bigger.

Further notes

• simplified the interface methods on DataFlowManager and DataFlowController, now they accept the whole TransferProcess object.

Linked Issue(s)

Closes #3414

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[codecov-commenter]

Codecov Report

Patch coverage: 82.14% and no project coverage change.

Comparison is base (e0440a2) 72.09% compared to head (cc65bfb) 72.09%.
Report is 1 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3428   +/-   ##
=======================================
  Coverage   72.09%   72.09%           
=======================================
  Files         830      834    +4     
  Lines       16818    16847   +29     
  Branches      954      953    -1     
=======================================
+ Hits        12125    12146   +21     
- Misses       4282     4289    +7     
- Partials      411      412    +1     

Files Changed	Coverage Δ
...onnector/transfer/spi/flow/DataFlowController.java	0.00% <0.00%> (ø)
...c/connector/transfer/spi/flow/DataFlowManager.java	0.00% <0.00%> (ø)
.../connector/transfer/spi/types/TransferProcess.java	74.69% <0.00%> (-0.47%)	⬇️
...c/connector/transfer/flow/DataFlowManagerImpl.java	100.00% <100.00%> (ø)
...r/transfer/process/TransferProcessManagerImpl.java	92.39% <100.00%> (-0.03%)	⬇️
...e/flow/ConsumerPullTransferDataFlowController.java	100.00% <100.00%> (ø)
...e/flow/ProviderPushTransferDataFlowController.java	92.85% <100.00%> (-1.88%)	⬇️

... and 4 files with indirect coverage changes

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