feat: markdown reporting stuff

[mrcjhicks]

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: fad5739

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[GarthDB]

Run report for fad57393

Total time: 13.8s | Comparison time: 14.8s | Estimated savings: 1s (6.8% faster)

	Action	Time	Status	Info
🟩	SyncWorkspace	6.7ms	Passed
⬛️	SetupToolchain(node:~20.12)	2s	Skipped
🟩	SyncProject(node, diff)	0.6ms	Passed
🟩	SyncProject(node, root)	0.5ms	Passed
🟩	InstallWorkspaceDeps(node:~20.12)	7.9s	Passed
🟩	RunTask(diff:diff)	113.9ms	Passed
🟩	RunTask(root:test)	1.8s	Passed
🟩	RunTask(diff:test)	3.9s	Passed

Touched files

.gitignore
tools/diff-generator/README.md
tools/diff-generator/github-api-key.js
tools/diff-generator/src/lib/added-token-detection.js
tools/diff-generator/src/lib/cli.js
tools/diff-generator/src/lib/file-import.js
tools/diff-generator/src/lib/format-function.js
tools/diff-generator/src/lib/formatterCLI.js
tools/diff-generator/src/lib/formatterMarkdown.js
tools/diff-generator/src/lib/store-output.js