Add remaining project files

.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+debug/
+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 can generally be ignored
+*.pdb
+*.lib
+*.exp
+
+# OS Generated
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Databases & Persistence
+*.sqlite
+*.sqlite3
+*.db
+*.db-journal
+bookmarks.toml
+
+# Environment variables
+.env
+.env.*
+
+# Audio Dumps from Debugging Strategy
+raw_mic.wav
+post_dsp.wav
+post_opus_decode.wav