Add prevent_destroy flags

[gvzdv]

Add prevent_destroy input parameters for all major AWS resources managed by this action, providing protection against accidental infrastructure deletion.

Changes

New Input Parameters (all default to true):

• tf_state_bucket_prevent_destroy - Protects S3 state bucket
• aws_ec2_prevent_destroy - Protects EC2 instance
• aws_vpc_prevent_destroy - Protects VPC infrastructure
• aws_r53_cert_prevent_destroy - Protects Route53 certificates
• aws_elb_prevent_destroy - Protects load balancer
• aws_efs_prevent_destroy - Protects EFS file system
• aws_rds_db_prevent_destroy - Protects RDS database

Files Modified:

• action.yaml - Added 7 new input parameters and passed them through to the underlying action
• README.md - Updated input documentation tables and added new "Protecting Resources with Prevent Destroy" section

Behavior

All resources are now protected by default.

[mickmcgrath13]

great start on the idea! it'll need a corresponding commons effort to actually modify the IaC:
https://github.com/bitovi/github-actions-commons