Adding tasks.py from ccs3.

Author: wpietri

tasks.py

@@ -0,0 +1,9 @@
+from invoke import task
+
+from c4d_utils.jobs import CronJob
+
+
+@task
+def fetch_crowdtangle(c, config):
+    with CronJob(c, venv='crowdtangle/venv') as j:
+        j.run_python(f'-m crowdtangle.run_fetch_crowdtangle --config_path {config} --runner DirectRunner --direct_num_workers=0 --direct_running_mode=multi_threading')