Make the platform responsible to create the buildenv.

It is now the platform who is responsible to:
- correctly add the toolchains as needed
- setup the cross environment
- create the cross files.

kiwixbuild/dependencies/kiwix_tools.py

@@ -15,6 +15,6 @@ class KiwixTools(Dependency):
 
         @property
         def configure_option(self):
-            if self.buildEnv.platform_info.static:
+            if self.buildEnv.platformInfo.static:
                 return "-Dstatic-linkage=true"
             return ""