Remove HalJson for Task-App #300

Job	Run time
Generate documentation	1m 17s
Check license conformity	22s
Build with Node.js 16	1m 0s
Build with Node.js 17	1m 5s
Lint code	15s
Build with Node.js 18	1m 47s
Test for Node.js 18 on ubuntu-latest	1m 9s
Test for Node.js 20 on ubuntu-latest	1m 1s
Test for Node.js 21 on ubuntu-latest	1m 9s
Test for Node.js 18 on macos-latest	2m 47s
Test for Node.js 20 on macos-latest	2m 38s
Test for Node.js 21 on macos-latest	1m 50s
Test for Node.js 18 on windows-latest	1m 48s
Test for Node.js 20 on windows-latest	1m 42s
Test for Node.js 21 on windows-latest	1m 37s
	21m 27s

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