Add KWallet support

[samuel-w]

In the future, we should check if the wallet closes in between detecting the current keyring and setting the password.

Also, is there an alternate way to do keyring detection other than a mountain of try excepts? The code is starting to get hard to read.

Fixes #236

[samuel-w]

Wait, QtDBus exists. Have to change code

[samuel-w]

Attempting to port to QtDBus, unsucessful.
Python crashes with "No such method 'open' in interface 'org.kde.KWallet' at object path '/modules/kwalletd5' (signature 'sis')"
Even when I convert the wId to qlonglong, it still gets converted back to an int.
However, the existing dbus code still works.
https://gist.github.com/samuel-w/005453d30250265e2c75c167d9b545b3

[Hofer-Julian]

Too bad...
But thanks for trying :)

[samuel-w]

Tested and it works, woohoo. Had to use command line to get the handle.

[m3nu]

Dont want to add this any more? I’m a bit behind merging PRs due to many other things going on, but plan to catch up over Aug.

[rejinka]

I really would like to get this feature

[samuel-w]

Initially closed this because I thought no one would use it, as more code = more maintenance. Guess I was wrong.

[samuel-w]

Wait a bit, I may have forgot to catch an exception

[samuel-w]

What's the status of this?

[codecov-io]

Codecov Report

Merging #540 (c16bb4d) into master (529b1da) will decrease coverage by 0.14%.
The diff coverage is 65.11%.

@@            Coverage Diff             @@
##           master     #540      +/-   ##
==========================================
- Coverage   74.60%   74.45%   -0.15%     
==========================================
  Files          52       53       +1     
  Lines        3379     3418      +39     
==========================================
+ Hits         2521     2545      +24     
- Misses        858      873      +15     

Impacted Files	Coverage Δ
src/vorta/keyring/kwallet.py	57.14% <57.14%> (ø)
src/vorta/keyring/abc.py	92.59% <100.00%> (+1.28%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 529b1da...c16bb4d. Read the comment docs.

[rejinka]

Thank you very much @samuel-w and @m3nu!