Extract static library and separate main function

[tezeb]

This commits separates main and rest of the code. Main is then used to created QtPass, using rest of the code compiled into static library. The same static library can now be directly linked with unit-tests, so there is no longer need to add separate object files for each test.
Common options moved from *.pro to qtpass.pri.

[annejan]

Wow, thanks!
This is a much needed cleanup, will look into the Windows build issue tomorrow.

[codecov]

Codecov Report

Merging #324 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #324   +/-   ##
======================================
  Coverage    2.93%   2.93%           
======================================
  Files          36      36           
  Lines        2690    2690           
  Branches      364     358    -6     
======================================
  Hits           79      79           
  Misses       2610    2610           
  Partials        1       1

Impacted Files	Coverage Δ
main/main.cpp	0% <ø> (ø)

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[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 9157e82 on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 9157e82 on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 464efc8 on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 464efc8 on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 70c16db on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 378868f on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage decreased (-0.03%) to 1.783% when pulling 378868f on tezeb:master into 7c78677 on IJHack:master.

[coveralls]

Coverage increased (+0.004%) to 1.817% when pulling c3b5b26 on tezeb:master into 7c78677 on IJHack:master.

[annejan]

Fixed last mac issue, merging . .
Will look into windows issue(s) when I get to office and can spin up a Windows VM

[tezeb]

Thanks for fixing it. I hoped to at least fix the Windows issue, but get carried away. Will set up env and try to fix it.