UPSTREAM: mm/damon/sysfs: split out schemes directory implementation to separate file

DAMON sysfs interface for 'schemes' directory is implemented using about
one thousand lines of code.  It has no strong dependency with other
parts of its file, so split it out to another file for better code
management.

Link: https://lkml.kernel.org/r/20221026225943.100429-11-sj@kernel.org


Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

(cherry picked from commit c8e7b4d0)

Bug: 300502883
Bug: 317310896
Change-Id: I3a8f63dc4f6de6f4662b6f1a7d12afe1e25b36d2
Signed-off-by: cui yangpei <cuiyangpei@xiaomi.com>