feat: Comparison in condition expressions

[fgmacedo]

Adds support for comparison operators into {ref}Condition expressions.

The following comparison operators are supported:

1. > — Greather than.
2. >= — Greather than or equal.
3. == — Equal.
4. != — Not equal.
5. < — Lower than.
6. <= — Lower than or equal.

Example:

>>> from statemachine import StateMachine, State, Event

>>> class AnyConditionSM(StateMachine):
...     start = State(initial=True)
...     end = State(final=True)
...
...     submit = Event(
...         start.to(end, cond="order_value > 100"),
...         name="finish order",
...     )
...
...     order_value: float = 0

>>> sm = AnyConditionSM()
>>> sm.submit()
Traceback (most recent call last):
TransitionNotAllowed: Can't finish order when in Start.

>>> sm.order_value = 135.0
>>> sm.submit()
>>> sm.current_state.id
'end'

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
1 Accepted issue

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (1f91cc4) to head (c4eace0).
Report is 9 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop      #507   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           25        25           
  Lines         1601      1631   +30     
  Branches       255       257    +2     
=========================================
+ Hits          1601      1631   +30     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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