Support new cl.exe dependency report files

[waruqi]

In the cl.exe compiler shipped with Visual Studio 16.7 Preview 3, cl.exe will have a new switch /sourceDependencies [json file name].

ninja-build/ninja#1806
ninja-build/ninja#1766
https://github.com/ninja-build/ninja/pull/1812/files/48275bf8b04f4b2352d9c1e2ea7213b2ff9fde1d..00fe279c0c23396cf77a5d06073a1a23085506a6

[OpportunityLiu]

所以还是赶紧弄个正经的JSON库进来吧

[waruqi]

是会弄个的 不过得等等 最近没啥时间

[waruqi]

json的调研和集成后期到这里跟进：#893

[waruqi]

所以还是赶紧弄个正经的JSON库进来吧

我加上了

[waruqi]

我初步支持上了，/sourceDependences 解析，初步看了下，似乎默认所有系统头文件也会带进来，没看到像gcc/clang那样可指定只生成项目的includes，这样可以减少不少输出量，提高处理和编译效率。

先这样吧，回头有问题再改进

输出内容大概长这样：

{
    "Version": "1.0",
    "Data": {
        "Source": "z:\\personal\\tbox\\src\\tbox\\tbox.c",
        "Includes": [
            "z:\\personal\\tbox\\src\\tbox\\tbox.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\config.h",
            "z:\\personal\\tbox\\src\\tbox\\config.h",
            "z:\\personal\\tbox\\build\\windows\\x64\\release\\tbox.config.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\cpu.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\arch.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\keyword.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\compiler.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\type.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\limits.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\endian.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\version.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\assembler.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\trace.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\abort.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\check.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\assert.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\malloc.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\utils.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\state.h",
            "z:\\personal\\tbox\\src\\tbox\\prefix\\cache.h",
            "z:\\personal\\tbox\\src\\tbox\\zip\\zip.h",
            "z:\\personal\\tbox\\src\\tbox\\zip\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\stream\\static_stream.h",
            "z:\\personal\\tbox\\src\\tbox\\stream\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\libc.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\misc\\ctype.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\misc\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\prefix.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\misc\\limits.h",
            "z:\\personal\\tbox\\src\\tbox\\libc\\misc\\stdarg.h",
            "c:\\program files (x86)\\microsoft visual studio\\2019\\preview\\vc\\tools\\msvc\\14.27.29109\\include\\stdarg.h",
            "c:\\program files (x86)\\microsoft visual studio\\2019\\preview\\vc\\tools\\msvc\\14.27.29109\\include\\vcruntime.h",
            "c:\\program files (x86)\\microsoft visual studio\\2019\\preview\\vc\\tools\\msvc\\14.27.29109\\include\\sal.h",
            "c:\\program files (x86)\\microsoft visual studio\\2019\\preview\\vc\\tools\\msvc\\14.27.29109\\include\\concurrencysal.h",
            "c:\\program files (x86)\\microsoft visual studio\\2019\\preview\\vc\\tools\\msvc\\14.27.29109\\include\\vadefs.h",
        ],
        "Modules": []
    }
}