DOC-2439: Export to PDF Standalone Service.

[kemister85]

Ticket: DOC-2439

Site: Staging branch Site: New Page

Changes:

• Add new export to pdf standalone service page to documentation suite.

Pre-checks:

• [x] Branch prefixed with feature/<version>/, hotfix/<version>/, staging/<version>/, or release/<version>/
• [x] modules/ROOT/nav.adoc has been updated (if applicable)
• [x] Files has been included where required (if applicable)

Review:

• [ ] Documentation Team Lead has reviewed