feat: Environment variables [GAIA-3110]

[QaiZeyn]

Description

Feature, add new environment variables

Scope of change

Please check the option that describes the scope of the change you are requesting.

• [ ] Small (fixing typos, changing lines of an existing doc, etc.)
• [ ] Medium (changing larger sections of an existing doc that could require back-and-forth)
• [x] Large (adding new pages or making changes to multiple pages)

NOTE: Please keep these timelines in mind when preparing docs changes.

• Small changes will get processed ASAP.
• Medium changes will depend on the workload and may get ticketed for next sprint.
• Large changes will always need a ticket in our next sprint.