feat: add corex-storage crate for unified storage abstraction

- Introduced corex-storage crate with support for local disk, S3-compatible, and Google Cloud Storage backends.
- Implemented StorageDriver trait for various storage backends.
- Added LocalFileStorage for local disk operations.
- Added S3Storage for S3-compatible object storage with multipart upload support.
- Added GcsStorage for Google Cloud Storage operations.
- Included error handling for storage operations.
- Added tests for each storage backend to ensure functionality.
- Created README.md for documentation and usage examples.
- Added Apache and MIT licenses for open-source compliance.

crates/mytheclipse-storage/Cargo.toml

@@ -0,0 +1,44 @@
+[package]
+name = "corex-storage"
+version = "1.2.0"
+edition = "2021"
+rust-version = "1.75"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/asepharyana/mytheclipse"
+homepage = "https://github.com/asepharyana/mytheclipse"
+documentation = "https://docs.rs/corex-storage"
+authors = ["asepharyana <superaseph@gmail.com>"]
+description = "Unified storage & file system abstraction: one driver interface over Local Disk, S3/MinIO, and Google Cloud Storage, with stream-based upload/download."
+readme = "README.md"
+keywords = ["storage", "s3", "gcs", "minio", "filesystem"]
+categories = ["filesystem", "asynchronous"]
+
+[features]
+default = ["local"]
+# The core `StorageDriver` trait (always compiled) needs `tokio`'s io-util for
+# `AsyncRead`/`ReadBuf`; `local` additionally needs `fs`/`rt`.
+local = ["tokio/fs", "tokio/rt"]
+# S3-compatible object storage (also covers MinIO via a custom endpoint).
+s3 = ["dep:aws-sdk-s3", "dep:aws-config", "dep:aws-credential-types"]
+# Google Cloud Storage.
+gcs = ["dep:google-cloud-storage", "dep:google-cloud-auth"]
+
+[dependencies]
+tracing = "0.1"
+# Required unconditionally: the core `StorageDriver` trait uses both.
+async-trait = "0.1"
+tokio = { version = "1.53", features = ["io-util"] }
+bytes = "1"
+
+# S3 / MinIO
+aws-sdk-s3 = { version = "1", optional = true }
+aws-config = { version = "1", optional = true, features = ["behavior-version-latest"] }
+aws-credential-types = { version = "1", optional = true }
+
+# Google Cloud Storage
+google-cloud-storage = { version = "0.24", optional = true }
+google-cloud-auth = { version = "0.17", optional = true }
+
+[dev-dependencies]
+tokio = { version = "1.53", features = ["full"] }
+tempfile = "3"