API: Add `requiresRestart` field to `Secret` and `Variable`

[rajdip-b]

Description

Whenever a configuration changes, we propagate the changes to the consuming applications. Consider a case where PORT_NUMBER changes. We would want our CLI to reload the application on the new port. For this, we would like to introduce a new field called requireRestart to both the Secret and Variable entities.

Solution

• Update the Secret and Variable models to store the new field. It should be a boolean value, with the default set to false.
• Update create.secret.ts and create.variable.ts. The fields should be marked optional.
• Update the service classes to reflect the changes.
• In places where we use Redis to emit the changes in configurations (when rolling back or creating a new revision), add another key called requiresRestart to the body.
• Include tests

[yogesh1801]

/attempt

[github-actions[bot]]

Assigned the issue to @yogesh1801!