Finished relation picker for companies (#305)

* Finished relation picker for companies

* Minor fixes

front/src/modules/comments/services/select.ts

@@ -26,6 +26,7 @@ export const GET_COMMENT_THREADS_BY_TARGETS = gql`
         }
       }
       commentThreadTargets {
+        id
         commentableId
         commentableType
       }

front/src/modules/comments/services/update.ts

@@ -0,0 +1,62 @@
+import { gql } from '@apollo/client';
+
+export const ADD_COMMENT_THREAD_TARGET = gql`
+  mutation AddCommentThreadTargetOnCommentThread(
+    $commentThreadId: String!
+    $commentThreadTargetCreationDate: DateTime!
+    $commentThreadTargetId: String!
+    $commentableEntityId: String!
+    $commentableEntityType: CommentableType!
+  ) {
+    updateOneCommentThread(
+      where: { id: $commentThreadId }
+      data: {
+        commentThreadTargets: {
+          connectOrCreate: {
+            create: {
+              id: $commentThreadTargetId
+              createdAt: $commentThreadTargetCreationDate
+              commentableType: $commentableEntityType
+              commentableId: $commentableEntityId
+            }
+            where: { id: $commentThreadTargetId }
+          }
+        }
+      }
+    ) {
+      id
+      createdAt
+      updatedAt
+      commentThreadTargets {
+        id
+        createdAt
+        updatedAt
+        commentableType
+        commentableId
+      }
+    }
+  }
+`;
+
+export const REMOVE_COMMENT_THREAD_TARGET = gql`
+  mutation RemoveCommentThreadTargetOnCommentThread(
+    $commentThreadId: String!
+    $commentThreadTargetId: String!
+  ) {
+    updateOneCommentThread(
+      where: { id: $commentThreadId }
+      data: { commentThreadTargets: { delete: { id: $commentThreadTargetId } } }
+    ) {
+      id
+      createdAt
+      updatedAt
+      commentThreadTargets {
+        id
+        createdAt
+        updatedAt
+        commentableType
+        commentableId
+      }
+    }
+  }
+`;