feat: more atoms styles (#22976)

* feat: availability override classnames

* feat: availability time picker styles

* feat: calendar settings headers styles

* feat: destination and connected calendars

* feat: date override title,description,button

* feat: selected calendars list

* example styles

* docs

* chanegest

* refactor: change import path to relative

* fix: make all classnames optional

* docs: time picker docs

---------

Co-authored-by: Somay Chauhan <somaychauhan98@gmail.com>

.changeset/mighty-wings-create.md

@@ -0,0 +1,5 @@
+---
+"@calcom/atoms": minor
+---
+
+feat: style calendar settings and availability overrides