docs(search): add basic index search

[danielleroux]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build (yarn build) was run locally and any changes were pushed
• Unit tests (yarn test) were run locally and passed
• Visual Regression Tests (yarn visual-regression) were run locally and passed
• Linting (npm lint) was run locally and passed

Pull request type

Please check the type of change your PR introduces:

• Bug fix
• Feature
• Refactoring (no functional changes, no API changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the new behavior?

• Implement basic search based on lunr local search plugin https://github.com/praveenn77/docusaurus-lunr-search
• Swizzle SearchBar components (keep existing more or less "bad code")
• Tag search is currently no supported (Feature request: search through tags praveenn77/docusaurus-lunr-search#81) Adding multiple tags and search to documentation #63

Does this introduce a breaking change?

• Yes
• No

[nuke-ellington]

Cannot review the search functionality since the input field says Loading.. and will not change.

[danielleroux]

@nuke-ellington

Cannot review the search functionality since the input field says Loading.. and will not change.

You have to build docusaurus, because index is only generated during build time. (https://github.com/praveenn77/docusaurus-lunr-search#how-to-use- see Note)

yarn build
yarn workspace documentation serve

[nuke-ellington]

@danielleroux Search looks nice :) But somehow theme is not loading in playground it seems:

[danielleroux]

@danielleroux Search looks nice :) But somehow theme is not loading in playground it seems:

@nuke-ellington Cannot reproduce this behavior 👀

[danielleroux]

@nuke-ellington can you try to host the build folder with npx http-server ./build?

[nuke-ellington]

lgtm