Feat: OS CLI output update

[dagrest]

• Follows CONTRIBUTING rules

What does this PR do?

• add description labels
• add issue summary
• actionable focus on upgrade
• count issues
• newline separates issues
• update severity headline

This PR is based on the following PRs:
feat:OS CLI output part I - update severity headline +test
feat:OS CLI output part II - newline separates issues +test
feat:OS CLI output part III - count issues +test
feat:OS CLI output part IV - actionable focus on upgrade
feat:OS CLI output part V - add issue summary
feat:OS CLI output part VI - add description labels

Where should the reviewer start?

src/lib/formatters/remediation-based-format-issues.ts
src/lib/formatters/format-test-meta.ts
src/lib/formatters/types.ts

How should this be manually tested?

Run 'snyk test' and 'snyk test --unmanaged' commands on a local project and compare output formatting with the attached screenshot

Any background context you want to provide?

What are the relevant tickets?

What are the relevant tickets?
TUN-269

Screenshots

Additional questions

[github-actions]

	Warnings
⚠️	Since the CLI is unifying on a standard and improved tooling, we're starting to migrate old-style imports and exports to ES6 ones. A file you've modified is using either module.exports or require(). If you can, please update them to ES6 import syntax and export syntax. Files found: test/jest/unit/lib/formatters/remediation-based-format-issues.spec.ts

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