feat: Add support for ASSIGN actions in Program Rules

[MatiasArriola]

📌 References

• Issue: Closes https://app.clickup.com/t/8696w4136 #8696w4136

📝 Implementation

• Disable the fields targeted by an assign action (tracker capture app does the same)
• Use D2ExpressionParser to evaluate the expression used in the action data
• Set the target field values according to the evaluated assign action data

📹 Screenshots/Screen capture

2025-01-09.15-51-38.mp4

🔥 Notes to the tester

• While this PR provides generic support for assign actions, I only tested it with the program rule mentioned in the issue

[ifoche]

Task linked: CU-8696w4136 Problem with program rule #UYc9cqylvNS