feature: add IonQ program_set support with task-level shot floor and reservation shots range

[AjinkyaGawali]

Issue #, if available:

Description of changes:
Adds IonQ ProgramSet support to the schemas package:

• OpenQASMProgramSetDeviceActionProperties.minimumTotalShots: Optional[conint(ge=1)] = None — task-level shot floor for ProgramSet submissions.
• DeviceServiceProperties.reservationShotsRange: tuple[int, int] | None = None — per-circuit shots range that overrides shotsRange for Braket Direct reservation tasks.
• IonqDeviceCapabilities.action now accepts OpenQASMProgramSetDeviceActionProperties in the action union.

All fields are backward-compatible Optional with safe defaults.

Testing done:
Tests for default values, explicit values, and validation constraints.

Merge Checklist

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General

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Tests

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (180abb5) to head (d9ad10a).

Additional details and impacted files

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  Coverage   100.00%   100.00%           
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  Files          121       121           
  Lines         1807      1810    +3     
  Branches        21        21           
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+ Hits          1807      1810    +3     

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