Validate scriban from cli

[tevoinea]

Summary of the Pull Request

What is this about?

Adds a cli command onefuzz debug notification template. You pass a template string and it will attempt to render it for you via scriban.

Help text:

$ onefuzz debug notification template -h
usage: onefuzz debug notification template [-h] [-v] [--format {json,raw}] [--query QUERY] [--context TemplateRenderContext] template

positional arguments:
  template

options:
  -h, --help            show this help message and exit
  -v, --verbose         increase output verbosity
  --format {json,raw}   output format
  --query QUERY         JMESPath query string. See http://jmespath.org/ for more information and examples.
  --context TemplateRenderContext
                        JSON for TemplateRenderContext. use @file to read from a file

Closes #2501

Info on Pull Request

• Adds the new template subcommand
• Adds some new C# types that weren't migrated to pytypes
• Update TaskConfig type to match C#

What does this include?

Validation Steps Performed

How does someone test & validate?

I ran the command with some valid and invalid scriban template strings to see if they're rendered correctly.

[codecov-commenter]

Codecov Report

Merging #2800 (c9e9fa1) into main (8f418f6) will not change coverage.
The diff coverage is n/a.

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  Misses      27319    27319           

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