feat: Add functions for PanelEvent.OPEN

[mofojed]

• Instead of using PanelEvent.OPEN directly and not getting any type safety, add functions for emitting, listening, and a hook to enforce type safety
• Add xcomponents to the styleguide

[codecov]

Codecov Report

Attention: Patch coverage is 27.27273% with 8 lines in your changes missing coverage. Please review.

Project coverage is 46.71%. Comparing base (b186ccf) to head (b3df572).

Files	Patch %	Lines
packages/code-studio/src/main/AppMainContainer.tsx	0.00%	6 Missing ⚠️
...dashboard-core-plugins/src/panels/ConsolePanel.tsx	0.00%	1 Missing ⚠️
packages/dashboard/src/layout/useDashboardPanel.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                        Coverage Diff                        @@
##           feature/core-plugins-refactor    #2144      +/-   ##
=================================================================
- Coverage                          46.71%   46.71%   -0.01%     
=================================================================
  Files                                689      690       +1     
  Lines                              38521    38526       +5     
  Branches                            9814     9727      -87     
=================================================================
+ Hits                               17996    17997       +1     
- Misses                             20473    20477       +4     
  Partials                              52       52              

Flag	Coverage Δ
unit	46.71% <27.27%> (-0.01%)	⬇️

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