Improve bot structure

[alexandrebarbaruiva]

PR Description

Improvement on bot structure. New token structure, has config_sample.ini to facilitate configuration.

Fixes:

Changes to Core Features

• [X] Have you added an explanation of what your changes do and why you'd like us to include them?
• [X] Have you written new tests or modified old ones for your core changes, as applicable?
• [X] Have you successfully run tests with your changes locally?

[codecov[bot]]

Codecov Report

Merging #70 into master will decrease coverage by 0.64%. The diff coverage is 69.44%.

@@            Coverage Diff             @@
##           master      #70      +/-   ##
==========================================
- Coverage   84.06%   83.42%   -0.65%     
==========================================
  Files           5        5              
  Lines         182      181       -1     
  Branches       15       15              
==========================================
- Hits          153      151       -2     
- Misses         25       26       +1     
  Partials        4        4

Impacted Files	Coverage Δ
bot/config_reader.py	100% <100%> (ø)	:arrow_up:
bot/application.py	84.72% <100%> (ø)	:arrow_up:
bot/watson.py	66.66% <50%> (ø)	:arrow_up:
bot/communication.py	75.75% <50%> (-1.17%)	:arrow_down:

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