add ghost-core with basic process enumeration

ghost-core/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "ghost-core"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+
+[dependencies]
+anyhow.workspace = true
+thiserror.workspace = true
+log.workspace = true
+
+[target.'cfg(windows)'.dependencies]
+windows = { version = "0.58", features = [
+    "Win32_Foundation",
+    "Win32_System_Diagnostics_ToolHelp",
+    "Win32_System_Threading",
+    "Win32_System_ProcessStatus",
+    "Win32_System_Memory",
+    "Win32_Security",
+] }
+
+[target.'cfg(unix)'.dependencies]
+libc = "0.2"