feat: Encode measurements followed by reads as pytket measurements

[tatiana-s]

Closes #1572 and technically #1570 (though instead of inserting read turns out you can only convert back to a measure anyway)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.37%. Comparing base (9861a92) to head (97525eb).

Additional details and impacted files

@@                  Coverage Diff                  @@
##           ts/future-measure    #1631      +/-   ##
=====================================================
- Coverage              85.37%   85.37%   -0.01%     
=====================================================
  Files                    181      181              
  Lines                  28233    28231       -2     
  Branches               27053    27051       -2     
=====================================================
- Hits                   24103    24101       -2     
  Misses                  3031     3031              
  Partials                1099     1099              

Flag	Coverage Δ
qis-compiler	91.66% <ø> (ø)

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