Add fixture flash-butrym/flash-19x15

[FloEdelmann]

• Update manufacturers.json
• Add fixture flash-butrym/flash-19x15

Fixture warnings / errors

• flash-butrym/flash-19x15
  • ❌ Mode '16ch' should have 16 channels according to its name but actually has 1.
  • ❌ Mode '16ch' should have 16 channels according to its shortName but actually has 1.
  • ❌ Category 'Moving Head' invalid since there are not both pan and tilt channels.

Thank you Anyon!

[github-actions]

Export files validity

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

Test the exported files of selected fixtures against the plugins' export tests.
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✔️ flash-butrym / flash-19x15: d-light / attributes-correctness

• ✔️ flash-butrym/flash-19x15-16ch.xml

✔️ flash-butrym / flash-19x15: dmxcontrol3 / channel-numbers

• ✔️ flash-butrym-flash-19x15-16ch.xml

✔️ flash-butrym / flash-19x15: dragonframe / json-schema-conformity

• ✔️ flash-butrym/flash-19x15.json
• ✔️ manufacturers.json

✔️ flash-butrym / flash-19x15: millumin / json-schema-conformity

• ✔️ flash-butrym/flash-19x15.json

❌ flash-butrym / flash-19x15: qlcplus_4.12.2 / fixture-tool-validation

• ❌ fixtures/Flash-Butrym-Flash-19x15.qxf

  Namespace(map=False, convert=None, validate=['.']) Starting validation ./manufacturer/fixture.qxf:16ch: No physical data found 1 definitions processed. 1 errors detected

✔️ flash-butrym / flash-19x15: qlcplus_4.12.2 / xsd-schema-conformity

• ✔️ fixtures/Flash-Butrym-Flash-19x15.qxf