Ntfy.sh Internationalized URL support added for click=

[caronc]

Description:

Related issue (if applicable): #1308

Support ntfy.sh internationalized URLs

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use flake8)
• 100% test coverage

Testing

Anyone can help test this source code as follows:

# Create a virtual environment to work in as follows:
python3 -m venv apprise

# Change into our new directory
cd apprise

# Activate our virtual environment
source bin/activate

# Install the branch
pip install git+https://github.com/caronc/apprise.git@1308-escape-ntfy-click

# Test out the changes with the following command:
apprise -t "Test Title" -b "Test Message" \
   "ntfys://ntfy.sh/topic/?click=https://通知の例"

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.37%. Comparing base (689fc07) to head (f80a6f2).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1312   +/-   ##
=======================================
  Coverage   99.37%   99.37%           
=======================================
  Files         161      161           
  Lines       21068    21069    +1     
  Branches     3790     3791    +1     
=======================================
+ Hits        20937    20938    +1     
  Misses        121      121           
  Partials       10       10           

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