chore: Remove large binary files from Git tracking

Removes large binary files that were causing push issues:

Removed Files:
- simctl binary (44MB) - should be built locally
- Terraform provider binaries (750MB+ total) - should be downloaded by terraform init
- Python virtual environments - should be created locally

Updated .gitignore:
- Added venv/ patterns for Python virtual environments
- Added .terraform/ patterns for Terraform provider binaries
- Added *.tfstate patterns for Terraform state files

This reduces repository size and prevents large binary files from being tracked.
Terraform providers will be downloaded automatically when running terraform init.
Python virtual environments should be created locally for each agent.

Repository size reduced from ~586MB to manageable size for Git operations.