Vendor helgoboss/helgobox (ReaLearn) as basis for custom UI fork

Stripped upstream git history; starting point for replacing the native
SWELL/Win32 mapping UI with something more suited to bulk editing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plugin-reaper-realearn/pot-browser/Cargo.toml

@@ -0,0 +1,41 @@
+[package]
+name = "pot-browser"
+version = "0.1.0"
+authors = ["Benjamin Klum <benjamin.klum@helgoboss.org>"]
+edition = "2021"
+publish = false
+
+[dependencies]
+# Own
+pot.workspace = true
+reaper-high.workspace = true
+reaper-medium.workspace = true
+base.workspace = true
+helgobox-api.workspace = true
+
+# 3rd-party
+egui.workspace = true
+egui_extras.workspace = true
+egui-toast.workspace = true
+chrono.workspace = true
+lru.workspace = true
+pulldown-cmark.workspace = true
+dirs.workspace = true
+crossbeam-channel.workspace = true
+strum.workspace = true
+swell-ui.workspace = true
+bytesize.workspace = true
+camino.workspace = true
+anyhow.workspace = true
+url.workspace = true
+
+[target.'cfg(target_os = "macos")'.dependencies]
+rfd.workspace = true
+
+[target.'cfg(not(all(target_os = "windows", target_arch = "x86")))'.dependencies]
+# This doesn't work on win32
+opener = { workspace = true, features = ["reveal"] }
+
+
+[lints.clippy]
+enum_glob_use = "deny"