HelloPy: Create a welcome message string.

{"id": "HelloPy", "title": "Create a welcome message string.", "description": "Create a welcome string.", "version": "2.0.0", "metadata": [{"title": "Demo"}], "jobControlOptions": ["sync-execute", "async-execute", "dismiss"], "outputTransmission": ["value", "reference"], "links": [{"rel": "http://www.opengis.net/def/rel/ogc/1.0/execute", "type": "application/json", "title": "Execute End Point", "href": "http://tb17.geolabs.fr:8119/ogc-api/processes/HelloPy/execution"}, {"rel": "alternate", "type": "text/html", "title": "Execute End Point", "href": "http://tb17.geolabs.fr:8119/ogc-api/processes/HelloPy/execution.html"}], "inputs": {"a": {"title": "Input string", "description": "The name to display in the welcome message.", "schema": {"type": "string"}, "metadata": [{"title": "My test"}], "id": "a"}}, "outputs": {"Result": {"title": "The welcome message", "description": "The welcome message created by service.", "schema": {"type": "string"}, "metadata": [{"title": "My test"}], "id": "Result"}}}