Adding support for calling MLIR functions

[kaushikcfd]

• Added module mlir.run that contains helpers for calling MLIR functions.
• Demonstrated some examples under tests/test_run.py.

[codecov-io]

Codecov Report

Merging #5 (647d6b7) into master (48019ee) will decrease coverage by 5.62%. The diff coverage is 31.77%.

@@            Coverage Diff             @@
##           master       #5      +/-   ##
==========================================
- Coverage   94.16%   88.53%   -5.63%     
==========================================
  Files           9       10       +1     
  Lines        1079     1186     +107     
==========================================
+ Hits         1016     1050      +34     
- Misses         63      136      +73     

Impacted Files	Coverage Δ
mlir/run.py	31.77% <31.77%> (ø)

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[tbennun]

Cool PR! I will review it as soon as I can :)