Merge branch 'create-basic-structure' into 'main'

Create initial project structure

See merge request !1

.gitignore

+# Python
+__pycache__/
+.venv/
+venv/
+
+# Data
+*.ms
+*.MS

README.md

+# LOFAR Pre-Processing Pipeline
+
+The Low-Frequency Array (LOFAR) Pre-Processing Pipeline is a workflow meant to be run on raw LOFAR data (post-correlation), and includes initial flagging, removal of bright off-axis sources (demixing), averaging in time and frequency, and Dysco compression.
+
+This is an implementation of the pre-processing pipeline in the Common Workflow Language (CWL), which is replacing the Generic Pipeline implementation.