fix(schematron): fix xspec.bat handling Schematron path with space

[AirQuick]

Fixes #716

• d9b9094 reproduces the problem on macOS, Windows and Linux
• cdc6859 fixes *nix (by merging master including refactor(schematron): create Schematron XSLT in output dir #679)
• b110b0c fixes Windows

[commit-lint]

Tests

• schematron: test CLI with space char (d9b9094)

Bug Fixes

• schematron: fix xspec.bat handling Schematron path with space (b110b0c)

Contributors

@AirQuick

[AirQuick]

I injected an @echo on into xspec.bat and verified that the variable expansion was deferred:

C:\test>java -cp "%SAXON_CP%" net.sf.saxon.Version
SAXON-HE 9.9.1.6J from Saxonica (build 120513)

C:\test>bin\xspec.bat -s "tutorial copy\schematron\demo-01.xspec"
...
Converting Schematron into XSLT...

C:\test>call :xslt ... -s:"%SCH_URI%" ...

C:\test>java ... -s:"file:/C:/test/tutorial%20copy/schematron/demo-01.sch" ...
...
passed: 3 / pending: 0 / failed: 0 / total: 3
Report available at C:\test\tutorial copy\schematron\xspec\demo-01-result.html
Done.

Merging this.