feat(editor): ERD arrowheads and diagrams (#10940)

packages/excalidraw/locales/en.json

@@ -53,7 +53,14 @@
     "arrowhead_crowfoot_many": "Crow's foot (many)",
     "arrowhead_crowfoot_one": "Crow's foot (one)",
     "arrowhead_crowfoot_one_or_many": "Crow's foot (one or many)",
+    "arrowhead_cardinality_one": "Cardinality (one)",
+    "arrowhead_cardinality_many": "Cardinality (many)",
+    "arrowhead_cardinality_one_or_many": "Cardinality (one or many)",
+    "arrowhead_cardinality_exactly_one": "Cardinality (exactly one)",
+    "arrowhead_cardinality_zero_or_one": "Cardinality (zero or one)",
+    "arrowhead_cardinality_zero_or_many": "Cardinality (zero or many)",
     "more_options": "More options",
+    "cardinality": "Cardinality",
     "arrowtypes": "Arrow type",
     "arrowtype_sharp": "Sharp arrow",
     "arrowtype_round": "Curved arrow",
@@ -624,7 +631,7 @@
   "mermaid": {
     "title": "Mermaid to Excalidraw",
     "button": "Insert",
-    "description": "Currently only <flowchartLink>Flowchart</flowchartLink>,<sequenceLink> Sequence, </sequenceLink> and <classLink>Class </classLink>Diagrams are supported. The other types will be rendered as image in Excalidraw.",
+    "description": "Currently only <flowchartLink>Flowchart</flowchartLink>, <sequenceLink>Sequence</sequenceLink>, <classLink>Class</classLink>, and <erdLink>Entity Relationship</erdLink> Diagrams are supported. The other types will be rendered as image in Excalidraw.",
     "syntax": "Mermaid Syntax",
     "preview": "Preview",
     "label": "Mermaid",
@@ -654,7 +661,7 @@
     "placeholder": {
       "title": "Let's design your diagram",
       "description": "Describe the diagram you want to create, and we'll generate it for you.",
-      "hint": "At the moment we know Flowchart, Sequence, and Class diagrams."
+      "hint": "At the moment we know Flowchart, Sequence, Class, and Entity Relationship diagrams."
     },
     "preview": "Preview",
     "insert": "Insert",