refactor: transitioned auth controller to use the new controller structure;

feat: setup DI for controllers;
refactor: marked old utils and routes package parts as deprecated

backend/internal/middleware/request.go

@@ -30,6 +30,7 @@ import (
 
 const requestKey = "request"
 
+// Deprecated: no longer used, embedded into controllers.GetRequest instead
 func ClientInfoFromContext(c *gin.Context) (*dto.ClientInfo, bool) {
 
 	var ok bool
@@ -58,10 +59,12 @@ func ClientInfoFromContext(c *gin.Context) (*dto.ClientInfo, bool) {
 	}, true
 }
 
+// Deprecated: no longer used, see controllers.GetRequest
 func RequestFromContext[T any](c *gin.Context) dto.Request[T] {
 	return c.Value(requestKey).(dto.Request[T])
 }
 
+// Deprecated: no longer used, see controllers.GetRequest
 func RequestMiddleware[T any](role enums.Role) gin.HandlerFunc {
 	return gin.HandlerFunc(func(c *gin.Context) {