feat: Add CSS styles for Spinner component with customizable sizes

Author: medyo

src/components/Elements/Spinner/Spinner.css

@@ -0,0 +1,32 @@
+.spinner {
+  position: relative;
+  border-radius: 50%;
+  border: 2px solid transparent;
+  border-top-color: currentColor;
+  border-right-color: currentColor;
+  border-bottom-color: currentColor;
+  animation: spin 1.5s linear infinite;
+  &.small {
+    width: 20px;
+    height: 20px;
+  }
+
+  &.medium {
+    width: 40px;
+    height: 40px;
+  }
+
+  &.large {
+    width: 50px;
+    height: 50px;
+  }
+}
+
+@keyframes spin {
+  0% {
+    transform: rotate(0deg);
+  }
+  100% {
+    transform: rotate(360deg);
+  }
+}