Add MuJoCo formation-flying scenario with OE feedback

[juan-g-bonilla]

• Tickets addressed: closes Add scenario demonstrating formation flying with drag with MuJoCo #1195
• Review: By commit
• Merge strategy: Merge (no squash)

Description

This branch adds a MuJoCo-based formation-flying scenario and the supporting modules needed to command deputy control forces from orbital-element feedback.

Commits are organized by feature:

• 8dce47d adds CmdForceInertialToForceAtSite (module, SWIG, unit test, docs).
• 47ad1cb adds orbElemOffset (module, SWIG, unit test, docs).
• 2f609d8 adds OrbitalElementControl as a LinearTimeInvariantSystem subclass (module, SWIG update, unit test, docs).
• b65cf2a adds examples/mujoco/scenarioFormationFlyingWithDrag.py and indexes it in examples/_default.rst.
• ec94c1e updates docs/source/Support/bskReleaseNotes.rst with the new modules/scenario.

Verification

Validation artifacts included in this branch:

• Added unit test: src/simulation/mujocoDynamics/cmdForceInertialToForceAtSite/_UnitTest/test_cmdForceInertialToForceAtSite.py
• Added unit test: src/fswAlgorithms/orbitControl/orbElemOffset/_UnitTest/test_orbElemOffset.py
• Added unit test: src/simulation/mujocoDynamics/linearTimeInvariantSystem/_UnitTest/test_orbitalElementControl.py
• test_scenarioMujoco.py runs the new scenario.

Test intent:

• cmdForceInertialToForceAtSite: verifies inertial-to-site force rotation and source-priority behavior (NavAtt over fallback SCStates).
• orbElemOffset: verifies element-wise offset mode and mean-anomaly-offset mode.
• orbitalElementControl: verifies force output consistency against meanOEFeedback (near-zero J2) for proportional and integral configurations.
• Assert test runs and produces figures for documentation.

Documentation

Documentation updated for all added components:

• src/simulation/mujocoDynamics/cmdForceInertialToForceAtSite/cmdForceInertialToForceAtSite.rst
• src/fswAlgorithms/orbitControl/orbElemOffset/orbElemOffset.rst
• src/simulation/mujocoDynamics/linearTimeInvariantSystem/orbitalElementControl.rst
• examples/mujoco/scenarioFormationFlyingWithDrag.py (scenario narrative and figures in docstring)
• examples/_default.rst (scenario indexing)
• docs/source/Support/bskReleaseNotes.rst (release-note entries)

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[schaubh]

mostly small stuff, nice PR!