Add gitignore

.gitignore

@@ -3,3 +3,30 @@
 result
 result-*
 .pre-commit-config.yaml
+# Generated by Cargo
+# will have compiled files and executables
+packages/alias-to-sieve/debug/
+packages/alias-to-sieve/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+# Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+# RustRover
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+packages/alias-to/sieve/.idea/
+
+# Testdata with private mailadresses
+packages/alias-to/sieve/testdata/mathebau.aliases
+
+# might contain private mailadresses as well
+packages/alias-to/sieve/testdata/virt_aliases