feat: support bool type variable frontend (#24437)

Co-authored-by: QuantumGhost <obelisk.reg+git@gmail.com>

web/app/components/workflow/panel/chat-variable-panel/utils.ts

@@ -0,0 +1,35 @@
+export const objectPlaceholder = `#  example
+#  {
+#     "name": "ray",
+#     "age": 20
+#  }`
+
+export const arrayStringPlaceholder = `#  example
+#  [
+#     "value1",
+#     "value2"
+#  ]`
+
+export const arrayNumberPlaceholder = `#  example
+#  [
+#     100,
+#     200
+#  ]`
+
+export const arrayObjectPlaceholder = `#  example
+#  [
+#     {
+#       "name": "ray",
+#       "age": 20
+#     },
+#     {
+#       "name": "lily",
+#       "age": 18
+#     }
+#  ]`
+
+export const arrayBoolPlaceholder = `#  example
+#  [
+#     "True",
+#     "False"
+#  ]`