Process.ex link/1 and unlink/1

Needed for future Registry.ex

Carbon copy from Elixir source.

Signed-off-by: Peter M <petermm@gmail.com>

Author: petermm

CHANGELOG.md

@@ -48,6 +48,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added CodeQL analysis to esp32, stm32, pico, and wasm workflows
 - Added Function.ex and Protocol.ex improving Elixir 1.18 support
 - Added WiFi support for ESP32P4 via esp-wifi-external for build with ESP-IDF v5.4 and later
+- Added Process.link/1 and unlink/1 to Elixir Process.ex
 
 ### Changed
 

libs/exavmlib/lib/Process.ex

@@ -231,6 +231,12 @@ defmodule Process do
   @spec list() :: [pid]
   defdelegate list(), to: :erlang, as: :processes
 
+  @spec link(pid | port) :: true
+  defdelegate link(pid_or_port), to: :erlang
+
+  @spec unlink(pid | port) :: true
+  defdelegate unlink(pid_or_port), to: :erlang
+
   @doc """
   Register a PID or port identifier under `name`.