According to the [documentation](https://openapi-generator.tech/docs/generators/go-server) the go-server generator should support an `addResponseHeaders` option but a template uses an `addResponseHeader` option in some places which this PR fixes. Closes #9795 Signed-off-by: Max Goltzsche <max.goltzsche@gmail.com>
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* Add go-chi generator to go-server * Add go-chi configs * Add go-chi generated output * Updated docs * Add some javadocs * Fix import issue * Regen files