Add fixture `american-dj/mega-24pro`

[FloEdelmann]

• Add fixture american-dj/mega-24pro

Thank you Mithrandil!

[github-actions[bot]]

Export files validity

(Output of test script tests/github/exports-valid.js.)

Test the exported files of selected fixtures against the plugins' export tests. You can run a plugin's export tests by executing: $ node cli/run-export-test.js -p <plugin name> <fixtures>

✔️ american-dj / mega-24pro: d-light / attributes-correctness

• ✔️ american-dj/mega-24pro-3ch.xml
• ✔️ american-dj/mega-24pro-7ch.xml
• ✔️ american-dj/mega-24pro-6ch.xml
• ✔️ american-dj/mega-24pro-10ch.xml
• ✔️ american-dj/mega-24pro-12ch.xml
• ✔️ american-dj/mega-24pro-16ch.xml

✔️ american-dj / mega-24pro: dmxcontrol3 / channel-numbers

• ✔️ american-dj-mega-24pro-3ch.xml
• ✔️ american-dj-mega-24pro-7ch.xml
• ✔️ american-dj-mega-24pro-6ch.xml
• ✔️ american-dj-mega-24pro-10ch.xml
• ✔️ american-dj-mega-24pro-12ch.xml
• ✔️ american-dj-mega-24pro-16ch.xml

✔️ american-dj / mega-24pro: dragonframe / json-schema-conformity

• ✔️ american-dj/mega-24pro.json
• ✔️ manufacturers.json

✔️ american-dj / mega-24pro: millumin / json-schema-conformity

• ✔️ american-dj/mega-24pro.json

✔️ american-dj / mega-24pro: qlcplus_4.12.2 / fixture-tool-validation

• ✔️ fixtures/American-DJ-Mega-24Pro.qxf

✔️ american-dj / mega-24pro: qlcplus_4.12.2 / xsd-schema-conformity

• ✔️ fixtures/American-DJ-Mega-24Pro.qxf