moved gitsigns out of lsp config

lua/plugins/gitsigns.lua

@@ -0,0 +1,12 @@
+return { -- Adds git related signs to the gutter, as well as utilities for managing changes
+        'lewis6991/gitsigns.nvim',
+        opts = {
+          signs = {
+            add = { text = '+' },
+            change = { text = '~' },
+            delete = { text = '_' },
+            topdelete = { text = '‾' },
+            changedelete = { text = '~' },
+          },
+         },
+      }