feat(post-processing): depth of field effect (#56)

* chore: added route helper function

* chore: added first version of effect

* chore: used leches in depth of field demo

* chore: dof effect: made props update properly

* chore: added prop comments to dof effect

* chore: fixed docs

* docs: added depth of field docs

* chore: improved dof demo

* chore: added links to postprocessing

* chore: removed redundant comments

* chore: remoced docs cache

* chore: updated gitignore

* chore: fixed typo

* chore: added disposal of plain effect pass

* chore: refactored depth of field effect; added prop watcher util functions

* chore: added watchOptions to util functions

---------

Co-authored-by: Tino Koch <tino.koch@xpoli.eu>

.gitignore

@@ -22,5 +22,5 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
-docs/.vitepress/dist
-docs/.vitepress/cache/deps/*.*
+docs/.vitepress/dist/
+docs/.vitepress/cache/