Add timeout argument annotation

[daa]

Fixes #131 .

Changes proposed in this pull request:

• add Timeout argument annotation to be able to pass timeout as consumer method argument or to inject it as transaction hook
• add Identity converter key to pass given value as is to use it in Timeout described above

Attention: @prkumar

[codecov]

Codecov Report

Merging #133 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #133   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          35     35           
  Lines        1853   1869   +16     
  Branches      155    155           
=====================================
+ Hits         1853   1869   +16

Impacted Files	Coverage Δ
uplink/arguments.py	100% <100%> (ø)	⬆️
uplink/converters/keys.py	100% <100%> (ø)	⬆️

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[prkumar]

@daa - Thanks for taking time to address this! Your changes look good to merge as-is!

[prkumar]

@daa - Just to follow up: if you'd like your name to appear in the AUTHORS.rst file, please let me know what name and/or public handle (e.g., @daa) that you'd like me to append to the file. For example, here's my entry in that file:

Raj Kumar (@prkumar)

Alternatively, you could open a separate PR with that change. Whatever works best for you!

[daa]

Thank you very much, you may mention me as Alexander Duryagin (@daa).