* fix: single source of truth for check types to read from

* test: add tests for scripted option in filters on checklist page

* test: add data test id to check container and target text without selector

…ate probes (#757)

* fix(frontend): remove "unused" prop and replace with conditional checkType check

* chore(frontend): add missing `break`(s) in switch-statement

* chore: stub out changing the form to a wizard

* chore: update layouts, reorganize sections

* chore: update tests

* chore: update check calc styles

* chore: some cleanup, use a button for sidebar item

* chore: clean up visited logic

* chore: update tests

* fix: open item with errors and scroll into view on submit

* feat: make check form responsive

* fix: allow custom section maxWidth as before

* chore: remove delete button from check editor form

---------

Co-authored-by: Chris Bedwell <christopher.bedwell@grafana.com>

* fix: update `Alerting docs` link and copy

* fix: update doc URLs after reorganization

* fix: update probes link

* fix: submission errors off screen and usage layout

* chore: move alert to footer

* chore: assume a 31 day month for usage calcs

* chore: update tests

* chore: redesign landing page

* chore: add k6 and terraform examples to welcome page

* chore: update welcome page tests

* chore: some cleanup, add alt text to images

* fix: handle smaller screen sizes

* chore: update copy

* chore: update some copy, add new logo

* fix: tiny cleanup so borders show and images / text are correctly sized & logo is role presentation

* chore: make scripted examples a tab next to the editor (#765)

* chore: make scripted examples a tab next to the editor

* fix: include active state for tab

* chore: clean up some comments

* chore: update feature status badges in check type select

---------

Co-authored-by: Chris Bedwell <christopher.bedwell@grafana.com>