feat: Add herodo package to workspace

- Added the `herodo` package to the workspace.
- Updated the MONOREPO_CONVERSION_PLAN.md to reflect
  the completion of the herodo package conversion.
- Updated README.md and build_herodo.sh to reflect the
  new package structure.
- Created herodo/Cargo.toml, herodo/README.md,
  herodo/src/main.rs, herodo/src/lib.rs, and
  herodo/tests/integration_tests.rs and
  herodo/tests/unit_tests.rs.

Cargo.toml

@@ -11,7 +11,7 @@ categories = ["os", "filesystem", "api-bindings"]
 readme = "README.md"
 
 [workspace]
-members = [".", "vault", "git", "redisclient", "mycelium", "text", "os", "net", "zinit_client", "process", "virt", "postgresclient"]
+members = [".", "vault", "git", "redisclient", "mycelium", "text", "os", "net", "zinit_client", "process", "virt", "postgresclient", "herodo"]
 
 [dependencies]
 hex = "0.4"
@@ -89,6 +89,4 @@ tokio = { version = "1.28", features = [
     "test-util",
 ] } # For async testing
 
-[[bin]]
-name = "herodo"
-path = "src/bin/herodo.rs"
+