Feat/export pfb to workspace

[ZakirG]

This PR adds a new button to the explorer in Windmill labeled "Export PFB to Workspace" that requests Pelican to place a cohort PFB in indexd and then sends that PFB GUID to the manifestservice.

Deployed in https://zakir.planx-pla.net/explorer

NOTE: The package.json will need to point to a new version of gen3-ui-component before merge. uc-cdis/gen3-ui-component#79

The change was called for by this ticket https://ctds-planx.atlassian.net/browse/PXP-5895

and specified by this design doc:
https://docs.google.com/document/d/1954SSzVgDDM41uBksIt9RY7_MRAcCzoaMfmwHtfpFG4/edit#

New Features

• New button in Windmill, "Export PFB to Workspace", which requests Pelican to place a cohort PFB in indexd and then sends that PFB GUID to the manifestservice.

Deployment changes

• A new Export to PFB button can be optionally enabled in the config.json. It is disabled by default. The button requires at least pelican:2020.10 release.

[lgtm-com]

This pull request introduces 2 alerts when merging ec45422 into b79f25b - view on LGTM.com

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• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging 2ec29db into f341b1b - view on LGTM.com

new alerts:

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This pull request introduces 2 alerts when merging cd96315 into a6cea28 - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging da1e788 into a6cea28 - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging 51937c1 into a6cea28 - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging 40f7dc5 into a6cea28 - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging eb9d95e into cffd906 - view on LGTM.com

new alerts:

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This pull request introduces 2 alerts when merging 669c59d into cffd906 - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

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This pull request introduces 2 alerts when merging 69ba709 into e0a3b1a - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update

[lgtm-com]

This pull request introduces 2 alerts when merging 417011b into e0a3b1a - view on LGTM.com

new alerts:

• 2 for Potentially inconsistent state update