Add: use breakpad to create crash.dmp on MacOS / Linux too (#11202)

Normally only the Windows platform could create a crash.dmp, making
analysing crash-reports from MacOS / Linux rather tricky.

CMakeLists.txt

@@ -134,6 +134,11 @@ else()
     find_package(CURL)
 endif()
 
+# Breakpad doesn't support emscripten.
+if(NOT EMSCRIPTEN)
+    find_package(unofficial-breakpad)
+endif()
+
 if(NOT OPTION_DEDICATED)
     if(NOT WIN32)
         find_package(Allegro)
@@ -310,6 +315,10 @@ if(NOT WIN32 AND NOT EMSCRIPTEN)
     link_package(CURL ENCOURAGED)
 endif()
 
+if(NOT EMSCRIPTEN)
+    link_package(unofficial-breakpad TARGET unofficial::breakpad::libbreakpad_client ENCOURAGED)
+endif()
+
 if(NOT OPTION_DEDICATED)
     link_package(Fluidsynth)
     link_package(SDL)