Seperate the ota_analysis from OTAgui.

The default entry point is /analyseOTA in production enviroment. This is
for the deployment on android.github.io/.

Test: Mannual tested.
Change-Id: Ic77277024b34b67b9964be8cf4f1592cebf5c5e8

tools/ota_analysis/src/components/BaseFile.vue

@@ -0,0 +1,46 @@
+<template>
+  <label class="file-select">
+    <div class="select-button">
+      <span v-if="label">{{ label }}</span>
+      <span v-else>Select File</span>
+    </div>
+    <input
+      type="file"
+      @change="handleFileChange"
+    >
+  </label>
+</template>
+
+<script>
+export default {
+  props: {
+    label: {
+      type: String,
+      default: ''
+    }
+  },
+  methods: {
+    handleFileChange(e) {
+      this.$emit('file-select', e.target.files)
+    }
+  }
+}
+</script>
+
+<style scoped>
+.file-select > .select-button {
+  padding: 1rem;
+
+  color: white;
+  background-color: #2EA169;
+
+  border-radius: .3rem;
+
+  text-align: center;
+  font-weight: bold;
+}
+
+.file-select > input[type="file"] {
+  display: none;
+}
+</style>