Bug report changes (#7709)

* android: dump logcat to file
* Update .github/ISSUE_TEMPLATE/bug_report.md

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

frontend/ui/elements/common_info_menu_table.lua

@@ -53,10 +53,26 @@ common_info.about = {
 common_info.report_bug = {
     text = _("Report a bug"),
     keep_menu_open = true,
-    callback = function()
+    callback_func = function()
+        local DataStorage = require("datastorage")
+        local log_path = string.format("%s/%s", DataStorage:getDataDir(), "crash.log")
+        local common_msg = T(_("Please report bugs to \nhttps://github.com/koreader/koreader/issues\n\nVersion:\n%1\n\nDetected device:\n%2"),
+            Version:getCurrentRevision(), Device:info())
+        local log_msg = T(_("Attach %1 to your bug report."), log_path)
+
+        if Device:isAndroid() then
+            local android = require("android")
+            android.dumpLogs(log_path)
+        end
+
+        local msg
+        if lfs.attributes(log_path, "mode") == "file" then
+            msg = string.format("%s\n\n%s", common_msg, log_msg)
+        else
+            msg = common_msg
+        end
         UIManager:show(InfoMessage:new{
-            text = T(_("Please report bugs to \nhttps://github.com/koreader/koreader/issues\n\nVersion:\n%1\n\nDetected device:\n%2"),
-                Version:getCurrentRevision(), Device:info()),
+            text = msg,
         })
     end
 }