feat: 优化 gif 和 webm 导出

Author: journey-ad

.gitignore

@@ -1,6 +1,7 @@
 .DS_Store
 node_modules
 /dist
+.history
 
 # local env files
 .env.local

package.json

@@ -12,6 +12,7 @@
     "axios": "^0.19.2",
     "core-js": "^3.6.4",
     "file-saver": "^2.0.2",
+    "gif.js": "^0.2.0",
     "gifshot": "^0.4.5",
     "js-base64": "^2.5.2",
     "jszip": "^3.4.0",
@@ -25,7 +26,8 @@
     "vue-concise-slider": "^3.4.4",
     "vue-moment": "^4.1.0",
     "vue-router": "^3.1.5",
-    "vuex": "^3.1.2"
+    "vuex": "^3.1.2",
+    "whammy": "^0.0.1"
   },
   "devDependencies": {
     "@vue/cli-plugin-babel": "^4.2.0",