Add android_filesystem props to misc_info.txt

Similar to https://r.android.com/3543364, this CL introduces a separate
"partition qualified" prop file to `android_filesystem`. The contents of
the different filesystem's will be coalesced by the top-level
android_device's misc_info.txt

This implementation introduces duplicates since some properties like
`erofs_default_compressor` will be written multiple times to
misc_info.txt. To prevent these duplicates, and also to help comparison
with Make built misc_info.txt, `sort -u` has been added to misc_info.txt

(There are still a lot of diffs between Make and Soong misc_info.txt)

Test: Built Soong's misc_info.txt locally
Bug: 398036609
Change-Id: If5ffee116d008dda5528bff0354719cec871750a