Create a Staging Branch

[evrentan]

Is your feature request related to a problem? Please describe.
N/A

Describe the solution you'd like
Create a Staging Branch;

• Create a Staging Branch
• Make it as the default branch.
• All PRs should be opened to staging branch and if everything is fine, then staging will be merged into main.
• Create a label named "merge branch"
• Create related branch permissions for this purpose.

Describe alternatives you've considered
N/A

Additional context
N/A