fix(bin): add missing JAR directory to windows batch script

[Alejandro G. Peregrina (agperegrina)]

What

Fixed the windows batch file in a way that Confluent Community Edition schema-registry works without docker. There are only symlinks—instead of the actual JARs for the needed dependencies—in the folders added to the :concat jump goto label that fills the %CLASSPATH%. Thus, this change adds the missing classes that are in the ksqldb directory solving this issue.

See also: confluentinc/kafka#1581

Checklist

• Contains customer facing changes? Including API/behavior changes
• Is this change gated behind feature flag(s)?
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• Did you add sufficient unit test and/or integration test coverage for this PR?
  • If not, please explain why it is not required
• Does this change require modifying existing system tests or adding new system tests?
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Test & Review

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After

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