Android: Automaticaly add MANAGE_EXTERNAL_STORAGE permission to apps

This prevents the user from needing to click through a permission
granting screen on their device before the agent is able to run on the
device.  Presumably, if you have `adb` access to the device, we can
assume it's alright to add this permission automatically.  This is only
relevant on API >= 30, as the `MANAGE_EXTERNAL_STORAGE` permission is
not available on earlier Android versions [0].

[0] https://developer.android.com/reference/android/Manifest.permission#MANAGE_EXTERNAL_STORAGE

renderdoc/android/android.cpp

@@ -1220,6 +1220,14 @@ struct AndroidController : public IDeviceProtocolHandler
       for(Android::ABI abi : abis)
         Android::adbExecCommand(deviceID, "shell am force-stop " + GetRenderDocPackageForABI(abi));
 
+      // Attempt to prevent the user needing to click through on permissions
+      if(apiVersion >= 30)
+      {
+        for(Android::ABI abi : abis)
+          Android::adbExecCommand(deviceID, "shell pm grant " + GetRenderDocPackageForABI(abi) +
+                                                " android.permission.MANAGE_EXTERNAL_STORAGE");
+      }
+
       Android::adbForwardPorts(dev.portbase, deviceID, 0, 0, false);
       Android::ResetCaptureSettings(deviceID);