Spend utxo with script in the output

[cffls]

Description

Include the script attached to a UTxO in the calculation of txn fees.

Fixes: #461

Breaking changes
Exclude UTxOs with scripts in UTxO selection. With this change, all UTxOs with script attached to their output could only be spent by explicitly calling builder.add_input(utxo). The rationale is that we don't want a reference script to be randomly selected and spent by txbuilder without the knowledge of users.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.80%. Comparing base (a9442be) to head (90d7f64).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #462      +/-   ##
==========================================
+ Coverage   89.78%   89.80%   +0.02%     
==========================================
  Files          33       33              
  Lines        4884     4886       +2     
  Branches      737      738       +1     
==========================================
+ Hits         4385     4388       +3     
  Misses        320      320              
+ Partials      179      178       -1     

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