chore: add gitignore files and database fix admin user script

add root, server, client gitignore files for different environment ignore rules, and add sql script to fix or initialize admin user with bcrypt encrypted password

server/.gitignore

@@ -0,0 +1,34 @@
+# Compiled
+/target/
+*.class
+*.jar
+*.war
+*.ear
+
+# Maven
+.mvn/
+mvnw
+mvnw.cmd
+
+# IDE
+.idea/
+*.iml
+.classpath
+.project
+.settings/
+
+# Logs
+logs/
+*.log
+
+# Uploads (local storage files)
+uploads/
+
+# Temp
+tmp/
+temp/
+
+# Environment
+application-local.yml
+application-dev.yml
+application-prod.yml