Add coc config

.config/coc/extensions/db.json

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+{
+  "lastUpdate": 1586260042078
+}

.config/coc/extensions/package.json

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+{
+  "dependencies": {
+    "coc-css": ">=1.2.2",
+    "coc-emmet": "^1.1.4",
+    "coc-eslint": ">=1.2.6",
+    "coc-html": ">=1.2.4",
+    "coc-json": ">=1.2.5",
+    "coc-prettier": ">=1.1.12",
+    "coc-svelte": "^0.0.2",
+    "coc-tsserver": ">=1.4.12"
+  }
+}

.config/coc/extensions/test.js

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+console.log("testing");