fix(create-next-app): validate --import-alias value (#63855)
Fixes #63854
Previously, there was no check when a path was passed with the
--import-alias flag. Furthermore, the regex used before did not check
for possible invalid paths.
The current regex checks the following conditions:
- It must follow the pattern `<prefix>/*`
- The prefix cannot contain invalid characters for folders, such as:
(whitespaces, /, <, >, :, ", /, \, |, ? and *)
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
