feat: adiciona pagina de configuracoes, tema claro/escuro e corrige loop de login

.gitignore

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+# Maven
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+# Eclipse
+.settings/
+.classpath
+.project
+
+# IntelliJ IDEA
+.idea/
+*.iws
+*.iml
+*.ipr
+out/
+*.factorypath
+
+# VS Code
+.vscode/
+
+# Environment variables
+.env
+
+# Logs
+*.log
+
+# OS
+.DS_Store
+Thumbs.db