docs: add search

[segunadebayo]

Description
This PR adds a custom Omnibar search to the docs as a temporary replacement for Algolia search. I've got the code for algolia in there as well. Once Algolia re-indexes the website, we'll swap out the omnibar with Algolia to get access to search analytics.

Possible Enhancement
Add quick and dirty analytics code that sends the search term to a spreadsheet for the team. Might not be needed once Algolia responds.

Fixes: #2588 #2264

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🦋 Changeset detected

Latest commit: a89061e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
@chakra-ui/layout	Patch
@chakra-ui/react	Patch
@chakra-ui/test-utils	Patch
chakra-cra	Patch
chakra-nextjs	Patch
chakra-nextjs-ts	Patch
@chakra-ui/props-docs	Patch
@chakra-ui/docs	Patch

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[ljosberinn]

fixes #2588 #2264

[lgtm-com]

This pull request introduces 1 alert when merging 9fe87a6 into 9a3c806 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class

[lgtm-com]

This pull request introduces 1 alert when merging 0c46cd0 into cf70dc6 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class

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This pull request introduces 3 alerts when merging f170723 into 44ee1f9 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

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This pull request introduces 3 alerts when merging f7dbac2 into 44ee1f9 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

[lgtm-com]

This pull request introduces 2 alerts when merging 6b52741 into 88db4c7 - view on LGTM.com

new alerts:

• 2 for Unused variable, import, function or class

[lgtm-com]

This pull request introduces 3 alerts when merging df056a3 into 88db4c7 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

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This pull request introduces 3 alerts when merging 628e553 into 88db4c7 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

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This pull request introduces 3 alerts when merging 480c371 into 0ddf6e2 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class

[lgtm-com]

This pull request introduces 3 alerts when merging dad078a into 0ddf6e2 - view on LGTM.com

new alerts:

• 3 for Unused variable, import, function or class