feat: introduce header default filter options #307

[aqumus]

fixes #307

Whats changed?

1. introduce VisibilityFilter enum
2. add visibility, showInherited and showExternals options which sets the default value of generated header filter
3. use the options value in header.ts theme partials
4. set the FilterItem (i.e FilterItemSelect and FilterItemChecked) component value by querying the dom element and plucking out dom value/attribute

Questions:

1. How does filter interaction updates the docs for eg: when inherited is unchecked by user, docs hides the inherited methods, not able to figure this out? Although this is just for my understanding
2. Is the setting of Filter component value reasonable?
3. What test case could we add for this?
4. Do we need to raise PR for typedoc-site to add description of these new options?

[aqumus]

@Gerrit0 possible to review this PR? I am also interested to know answers to the questions mentioned in the PR details.

[Gerrit0]

I'll try and get to this this weekend - sorry, slipped through the cracks

[Gerrit0]

Looks like it'll be next weekend ^

[aqumus]

@Gerrit0 Are the PR changes in the correct direction, any comments? I could resolve the conflicts and update the PR if it brings much value to v0.23 beta changes

[Gerrit0]

Yes - this is in the right direction, I just need to find some (soon! actually this time) to get it merged into the beta branch. I think there will end up being one option, which will be an object that can also have "@deprecated": false to add checkboxes for specific tags.