feat: initialize NestJS application with global error handling and response standardization

- Added nest-cli.json for NestJS configuration.
- Created package.json with dependencies and scripts for building, testing, and linting.
- Implemented AppController and AppService with a basic "Hello World!" response.
- Introduced ContextModule and ContextService for managing request-scoped context.
- Developed custom decorators for response messages and standardized error handling.
- Created global exception filter to handle various error types and format responses.
- Implemented response standardization interceptor to wrap successful responses.
- Added middleware for generating unique request IDs.
- Established DTOs for API responses and error handling.
- Configured TypeScript settings for the project.
- Set up Jest for testing with end-to-end test cases.

.vscode/settings.json

@@ -0,0 +1,31 @@
+{
+  "workbench.colorCustomizations": {
+    "activityBar.activeBackground": "#03d068",
+    "activityBar.background": "#03d068",
+    "activityBar.foreground": "#15202b",
+    "activityBar.inactiveForeground": "#15202b99",
+    "activityBarBadge.background": "#9e42fc",
+    "activityBarBadge.foreground": "#e7e7e7",
+    "commandCenter.border": "#15202b99",
+    "editorGroup.border": "#03d068",
+    "panel.border": "#03d068",
+    "sash.hoverBorder": "#03d068",
+    "sideBar.border": "#03d068",
+    "statusBar.background": "#03d068",
+    "statusBar.border": "#03d068",
+    "statusBar.debuggingBackground": "#d0036b",
+    "statusBar.debuggingBorder": "#d0036b",
+    "statusBar.debuggingForeground": "#e7e7e7",
+    "statusBar.foreground": "#15202b",
+    "statusBarItem.hoverBackground": "#029e4f",
+    "statusBarItem.remoteBackground": "#03d068",
+    "statusBarItem.remoteForeground": "#15202b",
+    "tab.activeBorder": "#03d068",
+    "titleBar.activeBackground": "#03d068",
+    "titleBar.activeForeground": "#15202b",
+    "titleBar.border": "#03d068",
+    "titleBar.inactiveBackground": "#03d06899",
+    "titleBar.inactiveForeground": "#15202b99"
+  },
+  "peacock.color": "#0afc81"
+}