Native demos in the docs

[sequba]

Changes

After this PR, the basic demo looks like this:

• add vuepress plugins and script necessary for compilation and running native HTML+JS+CSS demos
• add the Open in Stackblitz button
• add code-examples-generator script to HyperFormula project
• migrate all demos to 3-files format in the docs/examples directory in the main HyperFormula repo

Demos migrated:

• advanced usage
• basic operations
• basic usage
• batch operations
• clipboard operations
• date and time handling
• demo
• i18n
• localizing functions
• named expressions
• sorting data
• undo-redo

Exceptions

The framework demos and custom functions demo are more complex and they cannot be converted to the 3-files format easily. In my opinion, it's best to keep them as Codesandbox iframes. Stackblitz is not an option since it doesn't work in Safari.

• react demo
• angular demo
• vue demo
• svelte demo
• custom functions

hyperformula-demos repo

I think, we should archive this repository and continue maintaining the demos in docs/examples directory in the main repo.

How did you test your changes?

• local docs build

Types of changes

• Breaking change (a fix or a feature because of which an existing functionality doesn't work as expected anymore)
• New feature or improvement (a non-breaking change that adds functionality)
• Bug fix (a non-breaking change that fixes an issue)
• Additional language file, or a change to an existing language file (translations)
• Change to the documentation

Related issues:

1. Fixes Migrate documentation demos to native HTML+JS #1441

Checklist:

• I have reviewed the guidelines about Contributing to HyperFormula and I confirm that my code follows the code style of this project.
• I have signed the Contributor License Agreement.
• My change is compliant with the OpenDocument standard.
• My change is compatible with Microsoft Excel.
• My change is compatible with Google Sheets.
• I described my changes in the CHANGELOG.md file.
• My changes require a documentation update.
• My changes require a migration guide.

[github-actions]

Performance comparison of head (95ff6d7) vs base (fa09de2)

                                     testName |   base |   head |  change
-------------------------------------------------------------------------
                                      Sheet A | 499.18 | 502.63 |  +0.69%
                                      Sheet B | 160.03 | 161.57 |  +0.96%
                                      Sheet T | 141.23 | 140.65 |  -0.41%
                                Column ranges | 505.49 | 511.99 |  +1.29%
Sheet A:  change value, add/remove row/column |  13.09 |  14.58 | +11.38%
 Sheet B: change value, add/remove row/column | 125.22 | 127.27 |  +1.64%
                   Column ranges - add column | 146.68 | 150.18 |  +2.39%
                Column ranges - without batch | 430.75 | 436.72 |  +1.39%
                        Column ranges - batch |  107.5 | 109.48 |  +1.84%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.22%. Comparing base (d7ee29f) to head (d810cd1).
Report is 25 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1447      +/-   ##
===========================================
- Coverage    97.37%   97.22%   -0.16%     
===========================================
  Files          169      169              
  Lines        14428    14430       +2     
  Branches      3099     3101       +2     
===========================================
- Hits         14049    14029      -20     
- Misses         376      395      +19     
- Partials         3        6       +3     

see 1 file with indirect coverage changes