Added fuzzy tests

hbvm/fuzz/.gitignore

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+target
+artifacts
+corpus
+coverage
+Cargo.lock

hbvm/fuzz/Cargo.toml

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+[package]
+name = "hbvm-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.hbvm]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[profile.release]
+debug = 1
+
+[[bin]]
+name = "vm"
+path = "fuzz_targets/vm.rs"
+test = false
+doc = false

hbvm/fuzz/fuzz_targets/vm.rs

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+#![no_main]
+
+use {
+    hbvm::vm::{
+        mem::{HandlePageFault, Memory, MemoryAccessReason, PageSize},
+        Vm,
+    },
+    libfuzzer_sys::fuzz_target,
+};
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(mut vm) = Vm::<_, 0>::new_validated(data, TestTrapHandler) {
+        let _ = vm.run();
+    }
+});
+
+struct TestTrapHandler;
+impl HandlePageFault for TestTrapHandler {
+    fn page_fault(
+        &mut self,
+        _: MemoryAccessReason,
+        _: &mut Memory,
+        _: u64,
+        _: PageSize,
+        _: *mut u8,
+    ) -> bool {
+        false
+    }
+}