mapping: Git Signs stage Hunk

Add mnemonic mappings to stage hunk using Git Signs using `H` key for Hunk

Effectively moves original AstroNvim binding `SPC g s` to `SPC g H`
which also matches upper case `SPC g S` to stage buffer

Author: practicalli-johnny

CHANGELOG.md

@@ -2,6 +2,7 @@
 ## Added
 - community: nvim-jqx plugin to view JSON files in neovim
 - community: rest-nvim plugin to call REST endpoints from neovim
+- mapping: `SPC g H` key mapping for GitSigns stage hunk (orginally mapped to `SPC g s` in AstroNvim)
 
 
 # 2023-07-08

mappings.lua

@@ -52,7 +52,8 @@ return {
 
     -- Git Menu
     -- Menu mappings
-    ["<leader>gh"] = false, -- disable Reset Git Hunk mapping, used for Octo
+    ["<leader>gh"] = false, -- disable Reset Git Hunk mapping, used for Octo in plugins/git.lua 
+    ["<leader>gH"] = { function() require("gitsigns").stage_hunk() end, desc = "Stage Git hunk" },
     ["<leader>gn"] = { name = " Neogit" }, -- Neogit menu
     -- quick save
     -- ["<C-s>"] = { ":w!<cr>", desc = "Save File" },  -- change description but the same command