Added support for CosmosDB v4 extension

[gavin-aguiar]

Added support for cosmos db v4 extension for the new programming model.

New decorators for cosmosdb:

Extension 2.x and 3.x

• cosmos_db_trigger_v3
• cosmos_db_input_v3
• cosmos_db_output_v3

Extension 4.x and above

• cosmos_db_trigger
• cosmos_db_input
• cosmos_db_output

The new v4 cosmos db extension installation can be found here

The latest support configurations for the new programming model can be found here

[codecov[bot]]

Codecov Report

Merging #175 (80dff21) into dev (deafb79) will increase coverage by 0.23%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #175      +/-   ##
==========================================
+ Coverage   90.28%   90.51%   +0.23%     
==========================================
  Files          53       53              
  Lines        3046     3122      +76     
  Branches      809      815       +6     
==========================================
+ Hits         2750     2826      +76     
  Misses        219      219              
  Partials       77       77              

Flag	Coverage Δ
unittests	90.48% <100.00%> (+0.23%)	:arrow_up:

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Impacted Files	Coverage Δ
azure/functions/decorators/cosmosdb.py	100.00% <100.00%> (ø)
azure/functions/decorators/function_app.py	99.25% <100.00%> (+0.05%)	:arrow_up: