build: add ZeroBus output plugin build configuration (#1)

* build: disable out_zerobus on Windows ARM64

The previous pointer-size only gate falsely selected the windows-x86-64
prebuilt library when cross-compiling for Windows ARM64, causing the
ARM64 package job to fail at link time. Reject ARM/ARM64 by processor
name first, and keep the pointer-size check to pick the x86-64 prebuilt
on 64-bit x86 and disable the plugin on 32-bit Windows.

Signed-off-by: Claude <noreply@anthropic.com>

* build: align ZeroBus Windows ARM regex with Linux branch

The ARM rejection regex included lowercase spellings and bare ARM/arm
tokens that Windows never reports for CMAKE_SYSTEM_PROCESSOR. Use the
same alternation as the sibling Linux branch and quote the processor
value in the status message to match the existing style.

Signed-off-by: mats mats.kazuki@gmail.com

Author: mats16

cmake/zerobus-ffi.cmake

@@ -48,7 +48,14 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
     return()
   endif()
 elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
-  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+  if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64|ARM64|AARCH64)$")
+    message(STATUS
+      "ZeroBus FFI: no prebuilt library for Windows '${CMAKE_SYSTEM_PROCESSOR}', "
+      "disabling out_zerobus. "
+      "To build manually, set -DZEROBUS_LIB_DIR=/path/to/lib.")
+    FLB_OPTION(FLB_OUT_ZEROBUS OFF)
+    return()
+  elseif(CMAKE_SIZEOF_VOID_P EQUAL 8)
     set(_ZEROBUS_PLATFORM "windows-x86-64")
   else()
     message(STATUS