The "dir /w" command didn't look good due to unaligned columns.
- Add sdk/include/reactos/cjkcode.h header file.
- Add ConGetTextWidthA/W helper functions.
- Add base/shell/cmd/wcwidth.c to implement ConGetTextWidthW.
- Use ConGetTextWidth in DirPrintWideList function.
- Adjust some STRING_DIR_HELP5, STRING_DIR_HELP6 and STRING_DIR_HELP8 resource strings to make the column aligned.
CORE-17591
Particular DIR commands like: "DIR .", "DIR .." now work as expected,
and we also correctly fix the behavior for files without extension,
that r38746 (2b06cfc0) originally tried to fix but broke the previous
examples.
Therefore "DIR *." and "DIR noextfile." work too.
Pathological cases like "DIR \...", "DIR \...\.", "DIR ..\...\.." and
the like (and with more than 3 dots) now work as expected.
Adapted from PR #592 by Katayama Hirofumi MZ, but with extended bugfixing.
CORE-13961
