Rename option --target-platform to --config

The target_platform option has always be wrongly named.
This is not the platform we are targeted but how we compile.

This was ok at beginning as specifying how we compile somehow define
for what we compile but this is not a one to one mapping.

kiwixbuild/__init__.py

@@ -4,7 +4,7 @@ import os, sys
 import argparse
 
 from .dependencies import Dependency
-from .platforms import PlatformInfo
+from .configs import ConfigInfo
 from .builder import Builder
 from .flatpak_builder import FlatpakBuilder
 from . import _global
@@ -37,7 +37,9 @@ def parse_args():
         ),
     )
     parser.add_argument("--libprefix", default=None)
-    parser.add_argument("--target-platform", choices=PlatformInfo.all_platforms)
+    parser.add_argument(
+        "--config", choices=ConfigInfo.all_configs, default="native_dyn"
+    )
     parser.add_argument(
         "--verbose",
         "-v",
@@ -130,9 +132,6 @@ def parse_args():
     if not options.ios_arch:
         options.ios_arch = ["arm64", "x86_64"]
 
-    if not options.target_platform:
-        options.target_platform = "native_dyn"
-
     return options
 
 
@@ -140,9 +139,9 @@ def main():
     options = parse_args()
     options.working_dir = os.path.abspath(options.working_dir)
     _global.set_options(options)
-    neutralEnv = buildenv.PlatformNeutralEnv()
+    neutralEnv = buildenv.NeutralEnv()
     _global.set_neutralEnv(neutralEnv)
-    if options.target_platform == "flatpak":
+    if options.config == "flatpak":
         builder = FlatpakBuilder()
     else:
         builder = Builder()