add copy button

package-lock.json

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@@ -4687,6 +4702,14 @@
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@@ -6463,6 +6486,14 @@
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@@ -8873,6 +8904,11 @@
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@@ -9714,6 +9750,11 @@
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+    "tiny-emitter": {
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+    "vue-clipboard2": {
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+      "resolved": "https://registry.npmjs.org/vue-clipboard2/-/vue-clipboard2-0.2.1.tgz",
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+      "requires": {
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+      }
+    },
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