[adb] file sync performance on Windows

Print not more often than once a 100ms - it is smooth enough
and speeds up transfer even more on Windows, where a single
line output may take up to 5ms.
An added benefit is getting rid of some extra heap allocation
and string formatting when in the end the identical message
filtering would've dropped the line anyway. This is also
significantly more expensive on Windows.

Bug: 151900478
Test: manual, push/pull a file and a directory

Change-Id: I9038729e8a01d5f93fd301beaeb8a086f5039b77