refactor(popup and tooltip): change corner to placement

[rinaok]

#510

[codecov]

Codecov Report

Merging #589 (6850af7) into main (289e07b) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              main      #589    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           71       113    +42     
  Lines          824      1417   +593     
  Branches        56        98    +42     
==========================================
+ Hits           824      1417   +593     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
libs/components/src/lib/badge/badge.template.ts	100.00% <ø> (ø)
libs/components/src/lib/banner/banner.template.ts	100.00% <ø> (ø)
libs/components/src/lib/calendar/index.ts	100.00% <ø> (ø)
...components/src/lib/elevation/elevation.template.ts	100.00% <ø> (ø)
libs/components/src/lib/layout/layout.ts	100.00% <ø> (ø)
libs/components/src/lib/progress-ring/index.ts	100.00% <ø> (ø)
libs/components/src/lib/progress/progress.ts	100.00% <ø> (ø)
.../src/lib/accordion-item/accordion-item.template.ts	100.00% <100.00%> (ø)
...omponents/src/lib/accordion-item/accordion-item.ts	100.00% <100.00%> (ø)
libs/components/src/lib/accordion-item/index.ts	100.00% <100.00%> (ø)
... and 76 more

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