setup: register structure import command with aiida.cmdline.data.structure.import entrypoint

AiiDA v1.6.1 got a new entrypoint for registering command line format importers, use that to make "verdi data structure import cp2k ..." possible

Author: dev-zero

setup.json

@@ -27,6 +27,9 @@
         "aiida.workflows": [
             "cp2k.base = aiida_cp2k.workchains:Cp2kBaseWorkChain"
         ],
+        "aiida.cmdline.data.structure.import": [
+            "cp2k = aiida_cp2k.cli.data.structure:cmd_import"
+        ],
         "console_scripts": [
             "aiida-cp2k = aiida_cp2k.cli:cmd_root"
         ]