find all default .md files

[vibern0]

Describe the solution you'd like
Right now, only the README.md and LICENSE are copied if they exist. And not across all of the 4 results.

First, it is necessary to have a method that is consistently called, whatever the desired result is.
Second, it is also necessary to look at other standard files, such as

• CONTRIBUTING(.md)?
• CODE_OF_CONDUCT(.md)?
• SECURITY(.md)?