[MM-61756] Attribute Based Access Control - Phase 1 (#30785)

Attribute Based Access Control - Base
* MM-63662

* MM-63919

* MM-63954

* MM-63955 

* MM-63425

* MM-63426

* MM-63458

* MM-63459

* MM-63603

* MM-63845

* MM-64146

* MM-64199

* MM-64201

* MM-64233

* MM-64247

* MM-64268

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Co-authored-by: Harshil Sharma <harshilsharma63@gmail.com>
Co-authored-by: Pablo Andrés Vélez Vidal <pablovv2012@gmail.com>
Co-authored-by: abhijit-singh <abhijitsingh0702@gmail.com>
Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>

server/public/model/feature_flags.go

@@ -57,6 +57,8 @@ type FeatureFlags struct {
 	ExperimentalAuditSettingsSystemConsoleUI bool
 
 	CustomProfileAttributes bool
+
+	AttributeBasedAccessControl bool
 }
 
 func (f *FeatureFlags) SetDefaults() {
@@ -81,6 +83,7 @@ func (f *FeatureFlags) SetDefaults() {
 	f.NotificationMonitoring = true
 	f.ExperimentalAuditSettingsSystemConsoleUI = false
 	f.CustomProfileAttributes = false
+	f.AttributeBasedAccessControl = false
 }
 
 // ToMap returns the feature flags as a map[string]string