feat: add force_naming to force bucket's name over naming convention

The goal of this feature is to add the ability to set a custom name on buckets.

The main changes is handled by 2 files:

• variables.tf: line 58-67 (add force_naming variable)
• main.tf: line 30 (set force_naming value if set with an inference)

The rest is about terraform code formatting (terraform fmt --recursive).