Screenshot: Append app name to filename

Author: ezio84 <brabus84@gmail.com>
Date:   Tue Dec 19 14:37:35 2017 +0100

    Screenshot: append app name to filename

    Kang Samsung's idea.

    Change-Id: Ibc6a52b5e2597e6014a2da6a4211febe17ec02c7

Author: Wang Han <wanghan1995315@gmail.com>
Date:   Fri May 11 12:47:40 2018 +0200

    SystemUI: Don't append app name to file on lockscreen

    When device is locked, current implementation will append the current
    app name to file when taking screenshot. This causes information leaks.

    To prevent this, we check for isKeyGuardLocked() and fall back not to
    append the app name when taking screenshot on lockscreen.

    Change-Id: I04498faf51986e1a3723a32befd97d29e1f3fe58

Author: DroidFreak32 <rushabshah32@gmail.com>
Date:   Thu Oct 4 11:33:07 2018 +0530

    Screenshot: Append app name after screenshot date.

    Change-Id: I2ee5d65006ff22dfa381aae50e5757b8e7596e91

Author: ezio84 <brabus84@gmail.com>
Date:   Sat Jun 16 16:57:19 2018 +0200

    GlobalScreenshot: Fix screenshot not saved with some languages

    like Virgin Islands English when taking a screenshot of the Settings app

    Change-Id: Ic04f66f5813b9597c96835d15c74509c93530a5c

Author: Han Wang <416810799@qq.com>
Date:   Mon May 25 11:18:01 2020 +0200

    SystemUI: Do not convert application name to ISO-8859-15

     * ISO-8859-15 does not handle CJK chars, so all of them are
       'unknown' and empty eventually.

    Change-Id: I27c689f5d737190d381146e49c1989e998b4f623

Author: LuK1337 <priv.luk@gmail.com>
Date:   Mon Aug 24 17:52:39 2020 +0200

    SystemUI: Use TaskStackChangeListener API for contextual screenshot package name

    * This should hopefully fix mislabeled screenshots.

    Change-Id: Ifde106c0e306a6700081e4d724c1cf0c06dd126c

Change-Id: Ic2a42536bf763a0c6f7fb9ac4bbbe84f73723f91