feat(plugins): Add nvim-dap and overseer

Added:
  - [nvim-dap](https://github.com/mfussenegger/nvim-dap)
  - [nvim-dap-ui](https://github.com/rcarriga/nvim-dap-ui)
  - [overseer.nvim](https://github.com/stevearc/overseer.nvim)
Removed:
  - NeoTree `<leader>o` keymap (it's now used for overseer)

nvim/plugin/plugins.lua

@@ -14,3 +14,4 @@ require('which-key').setup()
 require('Comment').setup()
 require("better_escape").setup()
 require("todo-comments").setup()
+require("toggleterm").setup()