Improve addon typing

[mkszepp]

NOTE: This changes are breaking for current app's and right now not complete

ToDo's

• Resolve all any types
• Update tests to TS and test typing with glint
• Merge power-select-multipe with power-select
• Add in public api multiple as paramter
• Pass @extra to every component (gives user a simple possibility to pass custom values)
• Update docs examples
• Create migration section in docs
• Write docs, how typings can be used

Breaking changes:

• The support for passing component as strings was removed. Since ember 3.25 its recommended to pass component instead string. The @embroider/util package is deprecated
• <PowerSelectMultipleInputField> was removed => If this was used in app, you can use now <PowerSelectInputField> and replace @placeholder paramenter with @searchPlaceholder (deprecation added in 8.11)
• Input field id from multi select was replaced from ember-power-select-trigger-multiple-input-* to ember-power-select-trigger-input-* (its equal to single) (deprecation added in 8.11)
• <PowerSelectMultipleTrigger> was removed => If this was used in app, you can use now <PowerSelectTrigger> (deprecation added in 8.11)
• <PowerSelectMultiple> is now a wrapper component (it has no logic, it pass only @multiple={{true}} to <PowerSelect> component (deprecation added in 8.11)
• Move types into types.ts (possible breaking)
• Clear button sets value to undefined instead null (there is now no null anymore). This means, that the selected type is now T | undefined and not anymore T | null | undefined