feat(chunk): add code parsing chunker
What does this MR do and why?
Currently, the gitlab-elasticsearch-indexer uses a SizeChunker that chunks code content by size. In this MR, we replace it with the Code Chunker in the gitlab-code-parser.
Related issue: [Go Indexer] Introduce the Code Parsing Chunker (gitlab#536144 - closed)
How to set up and validate locally
Edited by Pam Artiaga