refactore: create feature modules (#387)

* add @angular/cli to the project

* increase nodejs version -> 8.2.1

* add lerna

* merge web and shared module

* move electron module into packages as uhk-agent

Electron agent functionality is not working

* delete symlinker

* convert private properties to public of component if used in html

* revert uhk-message.component

* fix component path

* fix the correct name of the uhk-message.component.scss

* building web and electron module

* delete uhk-renderer package

* handle device connect disconnect state

* add privilege detection

* fix set privilege functionality

* turn back download keymap functionality

* add bootstrap, select2 js and fix null pointer exception

* turn back upload data to keyboard

* fix send keymap

* fix test-serializer

* add missing package.json

* merging

* fix appveyor build

* fix linting

* turn back electron storage service

* commit the missing electron-datastorage-repository

* update node to 8.3.0 in .nvmrc and log node version in appveyor build

* set exact version number in appveyor build

* vertical align privilege and missing device components

* set back node version to 8 in appveyor

* move node-usb dependency from usb dir to root

maybe it is fix the appveyor build

* revert usb to root

* fix electron builder script

* fix electron builder script

* turn off electron devtools

* remove CTRL+U functionality

* fix CTRL+o

* fix lint error

* turnoff store freeze

* start process when got `Error: EPERM: operation not permitted` error

* move files from root usb dir -> packages/usb

packages/uhk-web/src/app/components/popover/tab/layer/layer-tab.component.html

@@ -0,0 +1,20 @@
+<ng-template [ngIf]="!isNotBase">
+    <select (change)="toggleChanged($event.target.value)">
+        <option *ngFor="let item of toggleData" [value]="item.id" [selected]="toggle === item.id">
+            {{ item.text }}
+        </option>
+    </select>
+    <span>the</span>
+    <select (change)="layerChanged($event.target.value)">
+        <option *ngFor="let item of layerData" [value]="item.id" [selected]="layer === item.id">
+            {{ item.text }}
+        </option>
+    </select>
+    <span [ngSwitch]="toggle">
+        <ng-template [ngSwitchCase]="true">layer by pressing this key.</ng-template>
+        <ng-template ngSwitchDefault>layer by holding this key.</ng-template>
+    </span>
+</ng-template>
+<ng-template [ngIf]="isNotBase">
+    <span> Layer switching is only possible from the base layer. </span>
+</ng-template>