Follow+Notes: Create client-side feature flag

[TylerHendrickson]

Subtask of [STORY]: Update 'Status' to 'Follow + Note' feature #2960

Blocked by

N/A

Blocks

• Follow+Notes: Implement Grant Activity card component in Grant Details view #3406
• Follow+Notes: Conditionally hide the Team Status Section based on feature flag #3429

Definition of Done

A new feature flag, followNotesEnabled, is defined in the client-side library of feature flags.

Implementation details

(See also: our Feature Flags development guide.)

• In packages/client/src/helpers/featureFlags/index.js, create a new function called followNotesEnabled() that returns a boolean value based on whether a feature flag named followNotesEnabled strictly evaluates (===) to true.
• In packages/client/public/deploy-config.js, register the new followNotesEnabled with a value of true so that this feature is enabled by default in development environments.
  • Note: Lines 16-17 of this file are currently not formatted according to our ESLint rules. Please reformat so that this file is compliant.
• In terraform/staging.tfvars, register the new followNotesEnabled feature flag within the website_feature_flags map with a value of false so that this feature is disable by default in our Staging environment.
• In terraform/prod.tfvars, register the new followNotesEnabled feature flag within the website_feature_flags map with a value of false so that this feature is disable by default in our Production environment.

[ClaireValdivia]

tried out the feature flag in staging and it is working as expected -thanks @sushilrajeeva !