Update Cranelift dependency in headcrab_inject

* Fix the inject_abort test.
* Simplify injection code (we don't need to use sinks to obtain rel...

Fix race condition in the writemem test

It incorrectly used both PTRACE_TRACEME and PTRACE_ATTACH while
only the TRACEME call is required.

Fix clippy warnings

* Switch to GitHub Actions for CI
* Remove TravisCI

* add m[un]map tests
* simplify syscall.rs tests

Co-authored-by: bjorn3 <[email protected]...

* add a `munmap` method for `LinuxTarget`

* format

* Update src/target/linux.rs

tiny edit

Add API to read & write registers for Linux

This trait can be used to implement register reading & writing functions
for target architectures.

Remove unused imports

Use {:#016x?} for register printing

The `x` causes all numbers to be formatted as hex. The `#` causes both an `0x` prefix to be adde...

remove _patch_breakpoint function

Refactor headcrab_inject

Make all errors Send + Sync

Accept an arbitrary Command as argument for launch

This allows passing arguments and setting env vars for the debuggee

Breakpoint support on Linux

Add imgui based gui example

Refactor local printing

Implement source mapping

Now the repl can be run as cargo run --example repl --features syntax-highlighting

Co-authored-by: bjorn3 <[email protected]>

change summary
--------------

(+) Print source lines when pausing on a breakpoint.
(+) New comm...

Co-authored-by: bjorn3 <[email protected]>