tmpfiles: create parent directories if they are missing for more line types

tmpfiles: create parent directories if they are missing for more line types

Currently, we create leading directories implicitly for all lines that
create directory or directory-like nodes.

With this, we also do the same for a number of other lines: f/F, C, p,
L, c/b (that is regular files, pipes, symlinks, device nodes as well as
file trees we copy).

The leading directories are created with te default access mode of 0755.
If something else is desired, users should simply declare appropriate
"d" lines.

Fixes: #7853