Initial inlining support (towards #924)

[arporter]

[codecov[bot]]

Codecov Report

Base: 99.50% // Head: 99.51% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (67648a1) compared to base (136ec52). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #1814    +/-   ##
========================================
  Coverage   99.50%   99.51%            
========================================
  Files         262      263     +1     
  Lines       39054    39203   +149     
========================================
+ Hits        38862    39011   +149     
  Misses        192      192            

Impacted Files	Coverage Δ
src/psyclone/psyir/symbols/datatypes.py	100.00% <100.00%> (ø)
src/psyclone/psyir/transformations/__init__.py	100.00% <100.00%> (ø)
src/psyclone/psyir/transformations/inline_trans.py	100.00% <100.00%> (ø)

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[arporter]

This is ready for first review now. One for @rupertford or @sergisiso.

[arporter]

Note that in doing this I had to extend ScalarType with a __eq__ method. I've added associated tests for that. This may touch on what @LonelyCat124 has been doing recently.

[arporter]

Ready for next review from @sergisiso now.

[arporter]

Assuming CI happiness, this is ready for another look now.