v0.9.0-pre23

BINDINGS/C++: Added ostream for common enums [closes #177]
BINDINGS/C++: Fixed crash in variant constructor
BINDINGS/C++: Remove unnecessary anonymous namespace
CODECS: Remove codec-specific .cmake files and move logic into codec-specific CMakeLists.txt
COMMON: Added resolution unit serialization
COMMON: Remove flip functions as they don't update image orientation correctly (may be will address this in the future)
DOC: Added link to Conan recipe
SAIL: Rename SAIL_EXCEPT_CODECS to SAIL_DISABLE_CODECS
TIFF: Enable all codecs in VCPKG or cross-compilation mode