docs: added debugged guide

docs/debug-guide.md

@@ -0,0 +1,44 @@
+# Debug Guide
+
+## Visual Studio Code
+
+### Setup
+
+1. Install delve:
+```sh
+go install github.com/go-delve/delve/cmd/dlv@latest
+```
+
+2. Setup vscode:
+
+In vscode, open command palette with <kbd>CTRL</kbd>+<kbd>SHIFT</kbd>+<kbd>P</kbd>, select `Open launch.json`, and add debug config block below to `launch.json`
+
+```json
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Attach",
+      "type": "go",
+      "request": "attach",
+      "mode": "remote",
+      "remotePath": "",
+      "port": 2345,
+      "host": "127.0.0.1",
+      "showLog": true,
+      "trace": "log",
+      "logOutput": "rpc"
+    }
+  ]
+}
+```
+
+### Debug
+
+1. Start `ticker` with remote debugger using this command:
+```sh
+dlv --listen=:2345 --api-version 2 --log=true --log-output=debugger,debuglineerr,gdbwire,lldbout,rpc --log-dest=./debugger.log --headless --accept-multiclient debug main.go
+```
+
+2. Open debug menu in vscode with <kbd>CTRL</kbd>+<kbd>SHIFT</kbd>+<kbd>ALT</kbd>+<kbd>D</kbd>
+
+3. Select command `Attach` and press the adjacent `▷` button to start `ticker` with the debugger attached