Fix include paths for TensorOptions, DefaultTensorOptions, OptionsGuard

[smessmer]

Stack:
    :white_circle:  #14642 Moved Backend to c10  💛
    :white_circle:  #14643 Fix include paths for Backend.h  💛
    :white_circle:  #14644 Move Layout to c10  💛
    :white_circle:  #14645 Fix include paths for Layout.h  💛
    :white_circle:  #14646 Move TensorOptions, DefaultTensorOptions and OptionsGuard to c10  💛
    :black_circle:  #14647 Fix include paths for TensorOptions, DefaultTensorOptions, OptionsGuard  💛
    :white_circle:  #14651 Remove TensorImpl -> LegacyTypeDispatch dependency  💛
    :white_circle:  #14658 Remove TensorImpl -> context_base dependency  💛

Differential Revision: D13283497

[peterjc123]

This PR causes build failure on Windows.
Update: Sorry, #14646 should be the cause.

[peterjc123]

The error log on PyTorch Windows CI:

06:38:46 TensorOptions.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: struct c10::Device __cdecl c10::TensorOptions::device(void)const " (__imp_?device@TensorOptions@c10@@QEBA?AUDevice@2@XZ) referenced in function "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl c10::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,struct c10::TensorOptions const &)" (??6c10@@YAAEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AEAV12@AEBUTensorOptions@0@@Z)
06:38:46 TensorOptions.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class caffe2::TypeMeta __cdecl c10::TensorOptions::dtype(void)const " (__imp_?dtype@TensorOptions@c10@@QEBA?AVTypeMeta@caffe2@@XZ) referenced in function "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl c10::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,struct c10::TensorOptions const &)" (??6c10@@YAAEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AEAV12@AEBUTensorOptions@0@@Z)
06:38:46 TensorOptions.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: enum c10::Layout __cdecl c10::TensorOptions::layout(void)const " (__imp_?layout@TensorOptions@c10@@QEBA?AW4Layout@2@XZ) referenced in function "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl c10::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,struct c10::TensorOptions const &)" (??6c10@@YAAEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AEAV12@AEBUTensorOptions@0@@Z)
06:38:46 TensorOptions.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: bool __cdecl c10::TensorOptions::requires_grad(void)const " (__imp_?requires_grad@TensorOptions@c10@@QEBA_NXZ) referenced in function "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl c10::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,struct c10::TensorOptions const &)" (??6c10@@YAAEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AEAV12@AEBUTensorOptions@0@@Z)