feat: Adding openapi example API

.vscode/tasks.json

@@ -0,0 +1,51 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "go",
+			"label": "go: build package",
+			"command": "build",
+			"args": [
+				"-C", "${workspaceFolder}/app", "-o", "bin/service.exec"
+			],
+			"problemMatcher": [
+				"$go"
+			],
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			},
+		},
+		{
+			"label": "Dev Server",
+			"type": "shell",
+			"command": "pwd;go",
+			"args": [
+				"run",
+				"."
+			],
+			"options": {
+				"cwd": "${workspaceFolder}/app"
+			},
+			"problemMatcher": [
+				"$go"
+			],
+			"group": "test"
+		},
+		{
+			"label": "openapi: generate",
+			"type": "shell",
+			"command": "oapi-codegen",
+			"args": [
+				"-config",
+				"openapi/cfg.yaml",
+				"openapi/openapi.yaml"
+			],
+			"options": {
+				"cwd": "${workspaceFolder}/app"
+			},
+			"problemMatcher": [],
+			"group": "none"
+		}
+	]
+}