scoop-search: added ability to search in the manifest description

[nixxo]

As per title, this PR wants to add the option of serching the term in the manifest description as well.

It is added as optional with the -d switch and produces the following output:

$ scoop search hex -d
'extras' bucket:
    hexchat (2.14.3)
    hexo-blog-client (1.2.9)
    hexo-client (1.3.6)
    hxd (2.4.0.0) --> description 'Hex and Disk Editor'
    rehex (0.3.1)
    util-linux-ng (2.14.1) --> includes 'hexdump.exe'
    wxhexeditor (0.24)

'main' bucket:
    busybox (3578-g359211429) --> includes 'hexdump'
    hexed (1.0.32)
    vbindiff (3.0-beta5) --> description 'Visual Binary Diff displays files in hexadecimal and ASCII (or EBCDIC).'
    watchexec (1.14.1)
    yubikey-personalization (1.19.0) --> includes 'modhex.exe'

'nixxo' bucket:
    xvi32 (2.55) --> description 'Freeware Hex Editor'

#4412

[Ash258]

#3446

[nixxo]

ok, installed Scoop-Core. Sems good so far, nice job.