refactor: sql queries related to privacy-accounting;

chore: regenerated swagger;
feat: utilizing new 410 error when user is banned/unavailable/deleted

backend/internal/controllers/profile.go

@@ -120,8 +120,12 @@ func (ctrl *ProfileController) getProfileByUsername(c *gin.Context) {
 	response, err := ctrl.ps.GetProfileByUsername(cinfo, username); if err != nil {
 		if errors.Is(err, errs.ErrNotFound) {
 			c.JSON(http.StatusNotFound, gin.H{"error": "Profile not found"})
+		} else if errors.Is(err, errs.ErrUnauthorized) {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Profile avaiable to authrorized users only"})
 		} else if errors.Is(err, errs.ErrForbidden) {
 			c.JSON(http.StatusForbidden, gin.H{"error": "Access restricted by profile's privacy settings"})
+		} else if errors.Is(err, errs.ErrGone) {
+			c.JSON(http.StatusGone, gin.H{"error": "Profile no longer available"})
 		} else {
 			c.Status(http.StatusInternalServerError)
 		}