chore: add gitignore

.gitignore

@@ -0,0 +1,108 @@
+!**/src/main/**/build/
+!**/src/test/**/build/
+!.mvn/wrapper/maven-wrapper.jar
+$RECYCLE.BIN/
+*#
+*.BACKUP.*
+*.BASE.*
+*.DS_Store
+*.LOCAL.*
+*.REMOTE.*
+*.bak
+*.cab
+*.class
+*.ctxt
+*.ear
+*.iml
+*.ipr
+*.iws
+*.jar
+*.launch
+*.lnk
+*.log
+*.msi
+*.msix
+*.msm
+*.msp
+*.nar
+*.orig
+*.pydevproject
+*.rar
+*.stackdump
+*.sublime-*
+*.sw?
+*.swp
+*.tar.gz
+*.tmp
+*.war
+*.zip
+*_BACKUP_*.txt
+*_BASE_*.txt
+*_LOCAL_*.txt
+*_REMOTE_*.txt
+*~
+*~.nib
+.#*
+.DS_Store
+.apt_generated
+.apt_generated/
+.autotools
+.buildpath
+.cache-main
+.classpath
+.cproject
+.exercism
+.externalToolBuilders/
+.factorypath
+.gradle
+.idea
+.loadpath
+.metadata
+.mtj.tmp/
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+.project
+.recommenders
+.recommenders/
+.scala_dependencies
+.settings
+.settings/
+.springBeans
+.sts4-cache
+.sts4-cache/
+.target
+.tern-project
+.texlipse
+.vscode
+.vscode/
+.worksheet
+/.nb-gradle/
+/dist/
+/nbbuild/
+/nbdist/
+/nbproject/private/
+/scratch
+/target/
+README.html
+Thumbs.db
+[Dd]esktop.ini
+bin
+bin/
+build
+build/
+buildNumber.properties
+dependency-reduced-pom.xml
+ehthumbs.db
+ehthumbs_vista.db
+heroku.json
+hs_err_pid*
+local.properties
+localhost.json
+pom.xml.next
+pom.xml.releaseBackup
+pom.xml.tag
+pom.xml.versionsBackup
+release.properties
+target
+target/
+tmp/