feat: Creates a modal showing all the available keyboard shortcuts (#2728)

* feat: Adds modal showing all the available keyboard shortcuts

* Minor fixes

* Minor fixes

* Spacing fixes

* fix translations

* Adds i18n

* Review fixes

* Review fixes

* spacing fixes

* Review fixes

* Minor fixes

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/i18n/locale/en/settings.json

@@ -98,6 +98,7 @@
     "CHANGE_ACCOUNTS": "Switch Account",
     "SELECTOR_SUBTITLE": "Select an account from the following list",
     "PROFILE_SETTINGS": "Profile Settings",
+    "KEYBOARD_SHORTCUTS": "Keyboard Shortcuts",
     "LOGOUT": "Logout"
   },
   "APP_GLOBAL": {
@@ -159,5 +160,30 @@
       },
       "SUBMIT": "Submit"
     }
+  },
+  "KEYBOARD_SHORTCUTS": {
+    "TITLE": {
+      "OPEN_CONVERSATION": "Open conversation",
+      "RESOLVE_AND_NEXT": "Resolve and move to next",
+      "NAVIGATE_DROPDOWN": "Navigate dropdown items",
+      "RESOLVE_CONVERSATION": "Resolve Conversation",
+      "GO_TO_CONVERSATION_DASHBOARD": "Go to Conversation Dashboard",
+      "ADD_ATTACHMENT": "Add Attachment",
+      "GO_TO_CONTACTS_DASHBOARD": "Go to Contacts Dashboard",
+      "TOGGLE_SIDEBAR": "Toggle Sidebar",
+      "GO_TO_REPORTS_SIDEBAR": "Go to Reports sidebar",
+      "MOVE_TO_NEXT_TAB": "Move to next tab in conversation list",
+      "GO_TO_SETTINGS": "Go to Settings",
+      "SWITCH_CONVERSATION_STATUS": "Switch Conversation status",
+      "SWITCH_TO_PRIVATE_NOTE": "Switch to Private Note",
+      "TOGGLE_RICH_CONTENT_EDITOR": "Toggle Rich Content editor",
+      "SWITCH_TO_REPLY": "Switch to Reply",
+      "TOGGLE_SNOOZE_DROPDOWN": "Toggle snooze dropdown"
+    },
+    "KEYS": {
+      "COMMAND_KEY": "⌘",
+      "ALT_OR_OPTION_KEY": "Alt / ⌥",
+      "FORWARD_SLASH_KEY": "/"
+    }
   }
 }