Adding analysis_chunk_size

enstools/encoding/chunk_size.py

 # Using a module file to store the desired chunk size.
+
+# Chunk size used to save files to disk
 chunk_size = "10MB"
 
+# Chunk size used for the analysis
+analysis_chunk_size = "100KB"
 def change_chunk_size(new_chunk_size: str):
     global chunk_size
     chunk_size = new_chunk_size