Merged PR 16: Transform every single class components into functional component

This improve greatly the performance and the code cleaning.
It allows us to separate the inseparable class methods into modules functions

src/Components/Editor/Editor.scss

@@ -0,0 +1,24 @@
+
+svg {
+  height: 100%;
+  width: 100%;
+}
+
+text {
+  font-size: 18px;
+  font-weight: 800;
+  fill: none;
+  fill-opacity: 0;
+  stroke: #000000;
+  stroke-width: 1px;
+  stroke-linecap: butt;
+  stroke-linejoin: miter;
+  stroke-opacity: 1;
+  transform: translateX(-50%);
+  transform-box: fill-box;
+}
+
+@keyframes fadein {
+    from { opacity: 0; }
+    to { opacity: 1; }
+}