libid3tag: restore mingw support + relocatable shared lib on macOS

[SpaceIm]

follow up #18987 (comment)

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[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 1 (58103d5209e1d48f4d980ea63b0d54fd87baa993):

• libid3tag/0.15.1b:
  All packages built successfully! (All logs)

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The v2 pipeline failed. Please, review the errors and note this is required for pull requests to be merged. In case this recipe is still not ported to Conan 2.x, please, ping @conan-io/barbarians on the PR and we will help you.

Failure in build 1 (58103d5209e1d48f4d980ea63b0d54fd87baa993):

• libid3tag/0.15.1b:
  CI failed to create some packages (All logs)

  Logs for packageID c2b0b614e90340d2e6ee07f163e7c5252c078301:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=apple-clang
  compiler.cppstd=17
  compiler.libcxx=libc++
  compiler.version=13
  os=Macos
  [options]
  */*:shared=True
  

  [...]
  libid3tag/0.15.1b (test package): CMakeToolchain generated: /Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package/CMakeUserPresets.json
  libid3tag/0.15.1b (test package): Generator 'VirtualRunEnv' calling 'generate()'
  libid3tag/0.15.1b (test package): Generating aggregated env files
  libid3tag/0.15.1b (test package): Generated aggregated env files: ['conanrun.sh', 'conanbuild.sh']
  
  ======== Testing the package: Building ========
  libid3tag/0.15.1b (test package): Calling build()
  libid3tag/0.15.1b (test package): Running CMake.configure()
  libid3tag/0.15.1b (test package): RUN: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package"
  -- Using Conan toolchain: /Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package/build/apple-clang-13-x86_64-17-release/generators/conan_toolchain.cmake
  -- Conan toolchain: Defining architecture flag: -m64
  -- Conan toolchain: Defining libcxx as C++ flags: -stdlib=libc++
  -- Conan toolchain: C++ Standard 17 with extensions OFF
  -- The C compiler identification is AppleClang 13.0.0.13000029
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  -- Check for working C compiler: /Applications/conan/xcode/13.0/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc - skipped
  -- Detecting C compile features
  -- Detecting C compile features - done
  -- Conan: Target declared 'libid3tag::libid3tag'
  -- Conan: Target declared 'ZLIB::ZLIB'
  -- Configuring done
  -- Generating done
  -- Build files have been written to: /Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package/build/apple-clang-13-x86_64-17-release
  
  libid3tag/0.15.1b (test package): Running CMake.build()
  libid3tag/0.15.1b (test package): RUN: cmake --build "/Users/jenkins/workspace/prod-v2/bsr/cci-60e93591/recipes/libid3tag/all/test_package/build/apple-clang-13-x86_64-17-release" -- -j8
  [ 50%] Building C object CMakeFiles/test_package.dir/test_package.c.o
  [100%] Linking C executable test_package
  ld: warning: ignoring file /Users/jenkins/workspace/prod-v2/bsr/80799/cfcea/p/b/libid4123ae3aba309/p/lib/libid3tag.dylib, building for macOS-x86_64 but attempting to link with file built for macOS-arm64
  Undefined symbols for architecture x86_64:
    "_id3_author", referenced from:
        _main in test_package.c.o
    "_id3_build", referenced from:
        _main in test_package.c.o
    "_id3_copyright", referenced from:
        _main in test_package.c.o
    "_id3_tag_version", referenced from:
        _main in test_package.c.o
    "_id3_version", referenced from:
        _main in test_package.c.o
  ld: symbol(s) not found for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make[2]: *** [test_package] Error 1
  make[1]: *** [CMakeFiles/test_package.dir/all] Error 2
  make: *** [all] Error 2
  
  ERROR: libid3tag/0.15.1b (test package): Error in build() method, line 21
  	cmake.build()
  	ConanException: Error 2 while executing
  

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