Align heap sample type names with allocation profiles

[IlyasShabi]

What does this PR do?:

Change Heap sample types names:

• objects => inuse_objects
• space => inuse_space

Motivation:

Removing the naming inconsistency between heap profiles and allocation profiles, this changs gives heap and allocation profiles one consistent contract: inuse_* always means live memory, and alloc_* means total allocations.

Additional Notes:

How to test the change?:

[github-actions]

Overall package size

Self size: 2.2 MB
Deduped: 2.56 MB
No deduping: 2.56 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | node-gyp-build | 4.8.4 | 13.86 kB | 13.86 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}