ZAPP-426 Validate custom Zigbee XMLs

package-lock.json

package.json

src-electron/rest/user-data.js

src-electron/zcl/zcl-loader-dotdot.js

src-electron/zcl/zcl-loader-silabs.js

src-electron/zcl/zcl-loader.js

src-shared/db-enum.js

src/components/ZclCustomZclView.vue

src/store/zap/actions.js

zcl-builtin/silabs/schema/zcl-validation.js

zcl-builtin/silabs/schema/zcl.xsd

zcl-builtin/silabs/zcl-test.properties

zcl-builtin/silabs/zcl.json