move read transforms into "source" package as FeatureSources

[tims]

First attempt #61

/donotmerge

/assign zhilingc

[tims]

/hold

[tims]

/assign pradithya

[tims]

/hold cancel

I think this is ready to merge now. This introduces breaking changes, for the import spec for file based imports, the "type" changes like so:

type: file, options: { format: csv} ----> type: file.csv
type: file, options: { format: json} ----> type: file.json

[tims]

@zhilingc @pradithya can you please review this?

[pradithya]

I think this is ready to merge now. This introduces breaking changes, for the import spec for file based imports, the "type" changes like so:

type: file, options: { format: csv} ----> type: file.csv
type: file, options: { format: json} ----> type: file.json

I think core will also need to change since it check for the import spec before submitting it, correct @zhilingc ?

[tims]

updated core import spec validator class

[pradithya]

/lgtm

[zhilingc]

Seems good. You're missing the license in some of the files though.
/approve

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zhilingc

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [zhilingc]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment