git: Add basic vim motions to git file history view

[AlvaroParker]

Closes #ISSUE

Related discussion #44629

Release Notes:

• Added simple g g, G, j and k motions for the file history view on vim mode.

[0x2CA]

I think it's better to allow j and k to count.

  {
    "context": "FileHistoryView",
    "bindings": {
      "j": "vim::MenuSelectNext",
      "k": "vim::MenuSelectPrevious",
      "g g": "menu::SelectFirst",
      "shift-g": "menu::SelectLast",
      "0": ["vim::Number", 0],
      "1": ["vim::Number", 1],
      "2": ["vim::Number", 2],
      "3": ["vim::Number", 3],
      "4": ["vim::Number", 4],
      "5": ["vim::Number", 5],
      "6": ["vim::Number", 6],
      "7": ["vim::Number", 7],
      "8": ["vim::Number", 8],
      "9": ["vim::Number", 9],
    },
  },

[cole-miller]

Thanks!