Distinct user in Contributors and Credits on vulnerability page (#2857)

Distinct user in Contributors and Credits on vulnerability page
### What's done:
* Distinct user in Contributors and Credits on vulnerability page

Author: kgevorkyan

save-frontend/src/main/kotlin/com/saveourtool/save/frontend/components/views/vuln/VulnerabilityGeneralInfoProps.kt

@@ -335,7 +335,7 @@ val vulnerabilityGeneralInfoProps: FC<VulnerabilityGeneralInfoProps> = FC { prop
                         +"Contributors".t()
                     }
                     userBoard {
-                        users = saveContributors
+                        users = saveContributors.distinctBy { it.name }
                         avatarOuterClasses = "col-2"
                     }
                 }
@@ -348,8 +348,8 @@ val vulnerabilityGeneralInfoProps: FC<VulnerabilityGeneralInfoProps> = FC { prop
                         className = ClassName("font-weight-bold text-primary-blue mb-4")
                         +"Credits"
                     }
-                    cosv.credits!!.forEachIndexed { creditInd, credit ->
-                        val userPrefix = if (credit.name in saveContributors.map { it.name }) "[SAVE] user" else "External user"
+                    cosv.credits!!.mergeContactsForOneUser().forEachIndexed { creditInd, credit ->
+                        val userPrefix = if (credit.name in saveContributors.map { it.name }) "[SAVE user]" else "[External user]"
                         if (props.isEditDisabled) {
                             div {
                                 className = ClassName("row ml-1")
@@ -514,6 +514,14 @@ external interface VulnerabilityGeneralInfoProps : Props {
     var setSelectedMenu: StateSetter<VulnerabilityTab>
 }
 
+private fun List<Credit>.mergeContactsForOneUser() = this
+    .groupBy { it.name }.map { entry ->
+        val name = entry.key
+        val contacts = entry.value.mapNotNull { it.contact }.flatten()
+        // suppose, that `credit type` is the same for credits with same name
+        Credit(name, contacts, entry.value.first().type)
+    }
+
 /**
  * @param currentUserInfo
  * @param vulnerability