docs: add Neovim debugging instructions (#3069)

Co-authored-by: Paul Valladares <[email protected]>

src/content/docs/develop/Debug/neovim.mdx

@@ -0,0 +1,127 @@
+---
+title: Debug in Neovim
+i18nReady: true
+---
+
+There are many different plugins that can be used to debug Rust code in Neovim. This guide will show you how to set up `nvim-dap` and some additional plugins to debug Tauri application.
+
+### Prerequisites
+
+`nvim-dap` extension requires `codelldb` binary. Download the version for your system from https://github.com/vadimcn/codelldb/releases and unzip it. We will point to it later in the `nvim-dap` configuration.
+
+### Configuring nvim-dap
+
+Install [`nvim-dap`](https://github.com/mfussenegger/nvim-dap) and [`nvim-dap-ui`](https://github.com/rcarriga/nvim-dap-ui) plugins. Follow the instructions provided on their github pages or simply use your favourite plugin manager.
+Note that `nvim-dap-ui` requires `nvim-nio` plugin.
+
+Next, setup the plugin in your Neovim configuration:
+
+```lua title="init.lua"
+local dap = require("dap")
+
+dap.adapters.codelldb = {
+  type = 'server',
+  port = "${port}",
+  executable = {
+    -- Change this to your path!
+    command = '/opt/codelldb/adapter/codelldb',
+    args = {"--port", "${port}"},
+  }
+}
+
+dap.configurations.rust= {
+  {
+    name = "Launch file",
+    type = "codelldb",
+    request = "launch",
+    program = function()
+      return vim.fn.input('Path to executable: ', vim.fn.getcwd() .. '/target/debug/', 'file')
+    end,
+    cwd = '${workspaceFolder}',
+    stopOnEntry = false
+  },
+}
+```
+
+This setup will ask you to point to the Tauri App binary you want to debug each time you lanuch the debugger.
+
+Optionally, you can setup `nvim-dap-ui` plugin to toggle debugger view automatically each time debugging session starts and stops:
+
+```lua title="init.lua"
+local dapui = require("dapui")
+dapui.setup()
+
+dap.listeners.before.attach.dapui_config = function()
+  dapui.open()
+end
+dap.listeners.before.launch.dapui_config = function()
+  dapui.open()
+end
+dap.listeners.before.event_terminated.dapui_config = function()
+  dapui.close()
+end
+dap.listeners.before.event_exited.dapui_config = function()
+  dapui.close()
+end
+
+```
+
+Lastly, you can change the default way the breakpoints are displayed in the editor:
+
+```lua title="init.lua"
+vim.fn.sign_define('DapBreakpoint',{ text ='🟥', texthl ='', linehl ='', numhl =''})
+vim.fn.sign_define('DapStopped',{ text ='▶️', texthl ='', linehl ='', numhl =''})
+```
+
+### Starting the dev server
+
+Since we're not using Tauri CLI to launch the app the development server will not start automatically. To control the state of development server from Neovim you can use the [overseer](https://github.com/stevearc/overseer.nvim/tree/master) plugin.
+
+Best way to control tasks running in background is to use [VS Code style task](https://github.com/stevearc/overseer.nvim/blob/master/doc/guides.md#vs-code-tasks) configuration. To do this create a `.vscode/tasks.json` file in the projects directory.
+
+You can find example task configuration for project using `trunk` below.
+
+```json title=".vscode/tasks.json"
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "type": "process",
+      "label": "dev server",
+      "command": "trunk",
+      "args": ["serve"],
+      "isBackground": true,
+      "presentation": {
+        "revealProblems": "onProblem"
+      },
+      "problemMatcher": {
+        "pattern": {
+          "regexp": "^error:.*",
+          "file": 1,
+          "line": 2
+        },
+        "background": {
+          "activeOnStart": false,
+          "beginsPattern": ".*Rebuilding.*",
+          "endsPattern": ".*server listening at:.*"
+        }
+      }
+    }
+  ]
+}
+```
+
+### Example key bindings
+
+Below you can find example key bindings to start and control debugging sessions.
+
+```lua title="init.lua"
+vim.keymap.set('n', '<F5>', function() dap.continue() end)
+vim.keymap.set('n', '<F6>', function() dap.disconnect({ terminateDebuggee = true }) end)
+vim.keymap.set('n', '<F10>', function() dap.step_over() end)
+vim.keymap.set('n', '<F11>', function() dap.step_into() end)
+vim.keymap.set('n', '<F12>', function() dap.step_out() end)
+vim.keymap.set('n', '<Leader>b', function() dap.toggle_breakpoint() end)
+vim.keymap.set('n', '<Leader>o', function() overseer.toggle() end)
+vim.keymap.set('n', '<Leader>R', function() overseer.run_template() end)
+```