feat(log) add logging system

.env

@@ -1,6 +1,11 @@
-BLOG_ENDPOINT=git@github.com:Lumither/blog-posts.git
+# General
 GIT_WORK_DIR=/home/lumither/dev/blog/blog_posts_git
+BLOG_ENDPOINT=git@github.com:Lumither/blog-posts.git
+LOG_ROOT_DIR=/var/log/nocturne
 
+# Backend
 BACKEND_URL=https://lumither.com/api
 BACKEND_PORT=3001
+
+## Database related
 DB_CONNECTION=postgresql://localhost:5432/blog