Update .gitignore and remove ignored files

Former-commit-id: 318e31aa0e62697bed8f04627ebadda732b3d7e5

Author: hjy666-mc

.gitignore

@@ -35,4 +35,27 @@ build/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store
+
+# Ignore JDKs and large binaries
+*.dylib
+*.so
+*.dll
+*.jar
+*.zip
+*.tar.gz
+*.7z
+*.bin
+*.class
+
+# Specific to your case:
+graalvm-jdk*/
+jdk*/
+jre*/
+dependency-reduced-pom.xml
+jmccc-temp/
+backups/
+launcher_settings.dat
+settings.json
+run.bat
+run.sh