…ckages with CMake

11d797e depends: Build `native_capnp` package with CMake (Hennadii Stepanov)
90389c9 depends: Build `capnp` package with CMake (Hennadii Stepanov)

Pull request description:

  The first commit fixes two bugs when cross-compiling the `capnp` package on the master branch @ 160d236:
  - for `x86_64-w64-mingw32` (see bitcoin#28735 (comment)):
  ```
  libtool: link: x86_64-w64-mingw32-g++-posix -shared -nostdlib /usr/lib/gcc/x86_64-w64-mingw32/12-posix/../../../../x86_64-w64-mingw32/lib/dllcrt2.o /usr/lib/gcc/x86_64-w64-mingw32/12-posix/crtbegin.o  src/kj/.libs/cidr.o src/kj/.libs/common.o src/kj/.libs/units.o src/kj/.libs/memory.o src/kj/.libs/refcount.o src/kj/.libs/array.o src/kj/.libs/list.o src/kj/.libs/string.o src/kj/.libs/string-tree.o src/kj/.libs/source-location.o src/kj/.libs/hash.o src/kj/.libs/table.o src/kj/.libs/encoding.o src/kj/.libs/exception.o src/kj/.libs/debug.o src/kj/.libs/arena.o src/kj/.libs/io.o src/kj/.libs/mutex.o src/kj/.libs/thread.o src/kj/.libs/time.o src/kj/.libs/filesystem.o src/kj/.libs/filesystem-disk-unix.o src/kj/.libs/filesystem-disk-win32.o src/kj/.libs/test-helpers.o src/kj/.libs/main.o src/kj/parse/.libs/char.o   -L/home/hebasto/git/bitcoin/depends/x86_64-w64-mingw32/lib -L/usr/lib/gcc/x86_64-w64-mingw32/12-posix -L/usr/lib/gcc/x86_64-w64-mingw32/12-posix/../../../../x86_64-w64-mingw32/lib -lstdc++ -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt -lkernel32 -lpthread -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt -lkernel32 /usr/lib/gcc/x86_64-w64-mingw32/12-posix/crtend.o  -mthreads -O2 -mthreads   -mthreads -o .libs/libkj-1-0-1.dll -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker .libs/libkj.dll.a
  /usr/bin/x86_64-w64-mingw32-ld: src/kj/.libs/cidr.o:cidr.c++:(.text+0x1dc): undefined reference to `__imp_inet_ntop'
  /usr/bin/x86_64-w64-mingw32-ld: src/kj/.libs/cidr.o:cidr.c++:(.text+0x44b): undefined reference to `__imp_inet_pton'
  collect2: error: ld returned 1 exit status
  ```
  - for `arm64-apple-darwin`:
  ```
  checking build system type... x86_64-pc-linux-gnu
  checking host system type... Invalid configuration `arm64-apple-darwin': machine `arm64-apple' not recognized
  configure: error: /bin/bash build-aux/config.sub arm64-apple-darwin failed
  ```

  The second commit applies the same changes for the `native_capnp` package for [consistency](bitcoin#28856 (comment)).

ACKs for top commit:
  ryanofsky:
    Code review ACK 11d797e. Since last review arm64-apple-darwin platform is now mentioned in the commit message, and the change to `depends/packages/libmultiprocess.mk` in d1604d4 which was unrelated (but probably still a good optimization) was reverted.

Tree-SHA512: c636e53073ce6fcda9724723bc59f3990fa9629a3b2f73d93dbc102a5a1badfbe8f4c5fef841f03588ebcad5cd4883f3ce32b128afcd75f6bc21eb801796a586