Fix argument initialization in args_envs.cc by updating process argument structure

- Changed the initialization of process arguments from a string to a native__process_args structure for improved clarity and consistency in argument handling.
- This update enhances the readability of the code and aligns with recent refactoring efforts in process management.

Author: MacroModel

examples/0035.process/args_envs.cc

@@ -19,14 +19,14 @@ int main(int argc, char **argv)
 
 	::fast_io::native_process p{
 		::fast_io::mnp::os_c_str(argv[1]),
-		{"char",
-		 L"wchar Double\"quotation\"marks",
-		 u8"u8",
-		 u"u16",
-		 U"u32",
-		 114514,
-		 115145.1919810,
-		 ::fast_io::concat_fast_io("This ", 1, "s ", ::fast_io::mnp::code_cvt_os_c_str(u8"just "), "a parameter")},
+		native_process_args{"char",
+							L"wchar Double\"quotation\"marks",
+							u8"u8",
+							u"u16",
+							U"u32",
+							114514,
+							115145.1919810,
+							::fast_io::concat_fast_io("This ", 1, "s ", ::fast_io::mnp::code_cvt_os_c_str(u8"just "), "a parameter")},
 		{"env1",
 		 L"env2",
 		 3,