Merge branch 'jt/repo-struct-more-objinfo'

Merge branch 'jt/repo-struct-more-objinfo'

More object database related information are shown in "git repo
structure" output.

* jt/repo-struct-more-objinfo:
  builtin/repo: add object disk size info to structure table
  builtin/repo: add disk size info to keyvalue stucture output
  builtin/repo: add inflated object info to structure table
  builtin/repo: add inflated object info to keyvalue structure output
  builtin/repo: humanise count values in structure output
  strbuf: split out logic to humanise byte values
  builtin/repo: group per-type object values into struct