feat: initial release of ucobs 0.1.0

μCOBS — Consistent Overhead Byte Stuffing encoder/decoder.
no_std, zero-alloc, spec-compliant (Cheshire & Baker 1999).
44 tests + doctests, property-based testing, fuzz targets,
cross-validation against corncobs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

fuzz/fuzz_targets/fuzz_decode.rs

@@ -0,0 +1,9 @@
+//! Fuzz target: feed arbitrary bytes to decode(). Must never panic.
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    let mut buf = [0u8; 2048];
+    // Must not panic — may return None on invalid input.
+    let _ = ucobs::decode(data, &mut buf);
+});