test-copies: move the new files in the `i` branch
The initial branch is moving some of the "same content" file around. We do the
same for the "different content" before start to implement more tests.
The new files have harmless impact of various existing tests.
Differential Revision: https://phab.mercurial-scm.org/D10054
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true