Implemented map function for Record.

[martin-neotech]

1. Implemented map function for Record.

2. Also included is functions for graph Objects.

3. Made the IDENTIFIER_PROPERTY_ATTRIBUTES more explicit.

4. Need to implement tests for isPath, isNode, etc

record.map

#469

hi, I would like to add a suggestion that Record will have a map function, it's already have forEach so I think its not too difference.
my use case is doing async stuff inside the forEach and I want to await there

const promises = record.map(async (v) => {
   // ... stuff
   await stuff(v)
   //... more stuff
})

await Promise.all(promises)
which I cant do with forEach,
what I did instead for now is

const promises = Object.values(record.toObject()).map(async (v) => {
   // ... stuff
   await stuff(v)
   //... more stuff
})

await Promise.all(promises)
which is kinda hack

[zhenlineo]

@lutovich Can you help to review this PR :)

[lutovich]

Looks good, made two small comments.
It would also be nice to add tests for isNode, isRelationship, etc.

[lutovich]

LGTM, two small comments

[zhenlineo]

Can you also clean your git commit history to remove unneeded commits such as Merge remote-tracking branch 'origin/4.0' into recordmapfunction
and merge small commits into bigger one commits, such as commits for Update TOOLS.md.

This is needed for anyone else who need to read git history when coding to figure out why you need to make changes at certain lines.

You can use git commands such as rebase to clean up git history.