feat: Implement blog and blog post models, routes, and services

- Added Blog and BlogPost models with necessary fields and relationships.
- Created blogRouter for handling blog-related API endpoints including CRUD operations.
- Developed BlogService for business logic related to blogs and posts, including sharing functionality.
- Implemented API client methods for frontend to interact with blog-related endpoints.
- Added internationalization support for blog-related text in English and German.
- Created Vue components for blog editing, listing, and viewing, including a rich text editor for post content.
- Enhanced user experience with form validations and dynamic visibility settings based on user input.

frontend/src/i18n/index.js

@@ -15,6 +15,7 @@ import enSocialNetwork from './locales/en/socialnetwork.json';
 import enFriends from './locales/en/friends.json';
 import enFalukant from './locales/en/falukant.json';
 import enPasswordReset from './locales/en/passwordReset.json';
+import enBlog from './locales/en/blog.json';
 
 import deGeneral from './locales/de/general.json';
 import deHeader from './locales/de/header.json'; 
@@ -30,6 +31,7 @@ import deSocialNetwork from './locales/de/socialnetwork.json';
 import deFriends from './locales/de/friends.json';
 import deFalukant from './locales/de/falukant.json';
 import dePasswordReset from './locales/de/passwordReset.json';
+import deBlog from './locales/de/blog.json';
 
 const messages = {
   en: {
@@ -47,6 +49,7 @@ const messages = {
     ...enSocialNetwork,
     ...enFriends,
     ...enFalukant,
+  ...enBlog,
   },
   de: {
     'Ok': 'Ok',
@@ -64,6 +67,7 @@ const messages = {
     ...deSocialNetwork,
     ...deFriends,
     ...deFalukant,
+  ...deBlog,
   }
 };