chore: default shortcut for next prev problem is ctrl-shfit?-i, f8 key to match browser dev tool

Author: abose

src/base-config/keyboard.json

@@ -305,10 +305,10 @@
         }
     ],
     "navigate.gotoNextProblem": [
-        "F8"
+        "Ctrl-I"
     ],
     "navigate.gotoPrevProblem": [
-        "Shift-F8"
+        "Ctrl-Shift-I"
     ],
     "navigate.prevDocListOrder":  [
         {

src/extensionsIntegrated/DisplayShortcuts/vscode.json

@@ -18,5 +18,7 @@
   "Ctrl-Shift-_": "navigation.jump.fwd",
   "Ctrl-P": "navigate.quickOpen",
   "Ctrl-Shift-P": "cmd.keyboardNavUI",
-  "Ctrl-Shift-O": "navigate.gotoDefinition"
+  "Ctrl-Shift-O": "navigate.gotoDefinition",
+  "F8": "navigate.gotoNextProblem",
+  "Shift-F8": "navigate.gotoPrevProblem"
 }