Document feature flag best practices.

Description

These will be debated at the server guild meeting and other places. Update this ticket when decisions are made.

QA Test Steps

No testing required.

Mana

None

Assignee

Unassigned

QA Assignee

None

Reporter

Christopher Speller

Epic Link

Fix versions

Mattermost Team

Workflows

Sprint

None

Labels

None

QA Testing Areas

Other (write in QA test steps)

GitHub Issue

None

Components

None
Configure