added questions on Platform / OS Version / Device (#41651)

* added questions on Platform / OS Version / Design

* changed following the comments

* removed the host platform question

.github/ISSUE_TEMPLATE/BUG.md

@@ -37,6 +37,17 @@ assignees: ''
 2. ...
 3. ...
 
+<!--
+     Please tell us which target platform(s) the problem occurs (Android / iOS / Web / macOS / Linux / Windows)
+     Which target OS version, for Web, browser, is the test system running?
+     Does the problem occur on emulator/simulator as well as on physical devices?
+-->
+
+**Target Platform:**
+**Target OS version/browser:**
+**Devices:**
+
+
 ## Logs
 
 <!--

.github/ISSUE_TEMPLATE/performance.md

@@ -48,6 +48,16 @@ assignees: ''
        https://medium.com/flutter-io/profiling-flutter-applications-using-the-timeline-a1a434964af03#a499
 -->
 
+<!--
+     Please tell us which target platform(s) the problem occurs (Android / iOS / Web / macOS / Linux / Windows)
+     Which target OS version, for Web, browser, is the test system running?
+     Does the problem occur on emulator/simulator as well as on physical devices?
+-->
+
+**Target Platform:**
+**Target OS version/browser:**
+**Devices:**
+
 ## Logs
 
 <!--