Check passwords against the HIBP online service (#4438)

* Fixes #1083

* Add online HIBP checker dialog to the database reports widget. Permission is requested from the user prior to performing any network operations. 
* The number of times a password has been found in a breach is shown to the user.
* If no passwords are breached then a positive message is presented.

* Source of HIBP icon: https://github.com/simple-icons/simple-icons/blob/develop/icons/haveibeenpwned.svg

Authored-by: Wolfram Rösler <wolfram@roesler-ac.de>
Co-authored-by: Jonathan White <support@dmapps.us>

src/CMakeLists.txt

@@ -159,6 +159,8 @@ set(keepassx_SOURCES
         gui/reports/ReportsDialog.cpp
         gui/reports/ReportsWidgetHealthcheck.cpp
         gui/reports/ReportsPageHealthcheck.cpp
+        gui/reports/ReportsWidgetHibp.cpp
+        gui/reports/ReportsPageHibp.cpp
         gui/reports/ReportsWidgetStatistics.cpp
         gui/reports/ReportsPageStatistics.cpp
         gui/osutils/OSUtilsBase.cpp
@@ -287,6 +289,7 @@ endif()
 
 if(WITH_XC_NETWORKING)
     list(APPEND keepassx_SOURCES
+            core/HibpDownloader.cpp
             core/IconDownloader.cpp
             core/NetworkManager.cpp
             gui/UpdateCheckDialog.cpp