feat: Remove herodo from monorepo and update dependencies

- Removed the `herodo` binary from the monorepo. This was
  done as part of the monorepo conversion process.
- Updated the `Cargo.toml` file to reflect the removal of
  `herodo` and adjust dependencies accordingly.
- Updated `src/lib.rs` and `src/rhai/mod.rs` to use the new
  `sal-vault` crate for vault functionality.  This improves
  the modularity and maintainability of the project.

vault/Cargo.toml

@@ -1,22 +1,47 @@
 [package]
-name = "vault"
+name = "sal-vault"
 version = "0.1.0"
-edition = "2024"
-
-[features]
-native = ["kv/native"]
-wasm = ["kv/web"]
+edition = "2021"
+authors = ["PlanetFirst <info@incubaid.com>"]
+description = "SAL Vault - Cryptographic functionality including key management, digital signatures, symmetric encryption, Ethereum wallets, and encrypted key-value store"
+repository = "https://git.threefold.info/herocode/sal"
+license = "Apache-2.0"
 
 [dependencies]
-getrandom = { version = "0.3.3", features = ["wasm_js"] }
-rand = "0.9.1"
-# We need to pull v0.2.x to enable the "js" feature for wasm32 builds
-getrandom_old = { package = "getrandom", version = "0.2.16", features = ["js"] }
-serde = { version = "1.0.219", features = ["derive"] }
-serde_json = "1.0.140"
+# Core cryptographic dependencies
 chacha20poly1305 = "0.10.1"
-k256 = { version = "0.13.4", features = ["ecdh"] }
-sha2 = "0.10.9"
-kv = { git = "https://git.threefold.info/samehabouelsaad/sal-modular", package = "kvstore", rev = "9dce815daa" }
-bincode = { version = "2.0.1", features = ["serde"] }
-pbkdf2 = "0.12.2"
+k256 = { version = "0.13.4", features = ["ecdsa", "ecdh"] }
+sha2 = "0.10.7"
+rand = "0.8.5"
+
+# Ethereum dependencies
+ethers = { version = "2.0.7", features = ["legacy"] }
+hex = "0.4"
+
+# Serialization and data handling
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+base64 = "0.22.1"
+
+# Error handling
+thiserror = "2.0.12"
+
+# Async runtime and utilities
+tokio = { version = "1.45.0", features = ["full"] }
+once_cell = "1.18.0"
+
+# File system utilities
+dirs = "6.0.0"
+
+# Rhai scripting support
+rhai = { version = "1.12.0", features = ["sync"] }
+
+# UUID generation
+uuid = { version = "1.16.0", features = ["v4"] }
+
+# Logging
+log = "0.4"
+
+[dev-dependencies]
+tempfile = "3.5"
+tokio-test = "0.4.4"