Adds a new CLI flag that enables compact sequence indentation where '- ' is
considered part of the indentation. This leverages the CompactSeqIndent()
method from the underlying go.yaml.in/yaml/v4 library.
Example output with --yaml-compact-seq-indent:
parent:
items:
- one
- two
Instead of the default:
parent:
items:
- one
- two
Closes#1841
