feat: Enable visualisation of the Status settings

[claremacrae]

Description

From replying to Tasks Issues and Features, it would be really useful to have a way to visualise a user's status settings, and even have a report of any issues in the settings.

This is what I've done so far:

• Add a button called Review and check your Statuses to the Tasks Custom Status settings.
• When clicked, it creates and opens a new markdown file, in the root of the vault.
• For simplicity, the file has a time-stamp in the name, so repeated running generates different files.
• The markdown file shows a Mermaid diagram of the Tasks Statuses actually loaded in the vault.

I plan to add some error checking info in a later PR.

Note: I'm planning on changing this some more, so am holding off writing the documentation for now.

Motivation and Context

Fixes #2354 - good enough for a first implementation I feel.

How has this been tested?

• Added new tests
• Ran existing ones
• Lots of manual testing in the demo vault, with a variety of different Status combinations.

Screenshots (if appropriate)

The new button, with its current tooltip text shown:

An example output file, opened automatically and viewed in Obsidian's Liew Preview mode:

Types of changes

Changes visible to users:

• New feature (prefix: feat - non-breaking change which adds functionality)

Internal changes:

• Tests (prefix: test - additions and improvements to unit tests and the smoke tests)

Checklist

• My code follows the code style of this project and passes yarn run lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• My change has adequate Unit Test coverage.

Terms

• My contribution follow this project's contributing guide
• I agree to follow this project's Code of Conduct