commit for v1.2

commit on 2022-01-22 for 1.1.2:

- Modified the picture viewer.
- Supported new file formats such as flac, json, java and xml.
- Modified the method of moving files, but there is a problem when the target file already exists.

commit on 20210827, optimized the problem that displaying a large pic…

…ture will get stuck

20210407,for 1.1

Merge branch 'master' of https://github.com/MrShieh-X/msfilemanager

20210330,first commit,1.0