Add sftp, ftps, webdav and webdavs as supported links

[cgonzalez]

Tested in KDE Plasma with Dolphin.

(Perhaps it could be better if QtPass allowed to define the supported link types.)

[annejan]

Looks good 👍

[annejan]

The type definition is something for a future feature.

I was looking into changing the RegularExpressions into VerbalExpressions too . .

[coveralls]

Coverage remained the same at 1.814% when pulling 31b6844 on cgonzalez:master into b2aa118 on IJHack:master.

[coveralls]

Coverage remained the same at 1.814% when pulling 31b6844 on cgonzalez:master into b2aa118 on IJHack:master.

[codecov]

Codecov Report

Merging #322 into master will not change coverage.
The diff coverage is 0%.

@@          Coverage Diff           @@
##           master    #322   +/-   ##
======================================
  Coverage    2.93%   2.93%           
======================================
  Files          36      36           
  Lines        2690    2690           
  Branches      364     364           
======================================
  Hits           79      79           
  Misses       2610    2610           
  Partials        1       1

Impacted Files	Coverage Δ
src/mainwindow.cpp	0% <0%> (ø)	⬆️

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