M1: core engine, config, plugin model and core plugins

- Cargo workspace (core, plugins, tui, cli) with drop-in compatible CLI
- Python-compatible config file handling, limits, views, rates, MMM, history
- process collection via sysinfo + procfs, filters, thresholds, events, actions
- 20 core plugins (cpu, percpu, mem, memswap, load, fs, network, diskio, ...)
- stdout, stdout-csv, stdout-json, --issue, --modules-list output modes
- differential test harness against the Python implementation

README.md

@@ -0,0 +1,32 @@
+# glances-rs
+
+A Rust rewrite of [Glances](https://github.com/nicolargo/glances), the system
+monitoring tool, targeting Linux.
+
+This project is a drop-in replacement for the **standalone** Glances modes:
+
+- curses-like terminal UI (`glances`)
+- stdout modes: `--stdout`, `--stdout-csv`, `--stdout-json`
+- `--fetch`, `--issue`, `--modules-list`
+- all plugins, including extended ones (containers, GPUs, sensors, ...)
+- the same `glances.conf` configuration file
+
+The following Python Glances features are intentionally **not** provided:
+REST API, WebUI, MCP, client/server mode, discovery/browser, SNMP and exporters.
+
+## Status
+
+Work in progress. See the milestones in the project plan; the workspace is
+organized as:
+
+| Crate | Purpose |
+| --- | --- |
+| `glances-core` | plugin model, config, limits, history, events, filters, output |
+| `glances-plugins` | collectors and plugin registry/engine |
+| `glances-tui` | terminal UI (ratatui) |
+| `glances-cli` | the `glances` binary |
+
+## License
+
+Licensed under either of [Apache License, Version 2.0](LICENSE-APACHE) or
+[MIT license](LICENSE-MIT) at your option.