[Breaking Change] Default key tag is changed to pysesame3 from API

[mochipon]

This commit allows users to set their own key tags.
Key tags will be stored in the history as the name of the key that unlocked or locked the door.
It will be more understandable when auditing the key operation using APIs and the apps.

[codecov]

Codecov Report

Merging #8 (12bb106) into main (4ae5529) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main        #8   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          273       273           
=========================================
  Hits           273       273           

Impacted Files	Coverage Δ
pysesame3/cloud.py	100.00% <100.00%> (ø)
pysesame3/lock.py	100.00% <100.00%> (ø)

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[mochipon]

The biggest reason for making this disruptive change is that the value API itself is not descriptive at all. There are many different ways to use Web APIs in the world (e.g., nzws/homebridge-sesame-os2 which is great btw), and they should be distinguishable.