SAST Config UI - Analyzers
## Problem to Solve
Provide UI to easily configure SAST analyzers
**Note:** Button labels should be `Expand` and `Collapse`
## Collapsed analyzer section (Default)

## Expanded analyzer section (user clicked `Expand` button)

## Unchecked analyzer ("off" state)
See Flawfinder example below where text input is disabled

## Implementation Strategy
~frontend (this is perhaps best done _after_ https://gitlab.com/gitlab-org/gitlab/-/issues/227575, otherwise *more* would have to ported to GQL later)
- [ ] ~"frontend-weight::2" Create expandable container component (likely under `ee/app/assets/javascripts/security_configuration/sast/components`)
- See [internal discussion](https://gitlab.slack.com/archives/C0GQHHPGW/p1593535076466100) on this.
- [ ] ~"frontend-weight::2" Create `AnalyzersConfiguration` component
- Uses the expand/collapse component
- Receives `analyzers` configuration from GQL query as a prop
- emits an `input` event with updated deep copy of `analyzers` prop, with changes applied
- [ ] ~"frontend-weight::3" Consume `AnalyzersConfiguration` component in [`ConfigurationForm`](https://gitlab.com/gitlab-org/gitlab/blob/07047f1faa5906d737b856bdcc23fd77d0845c4b/ee/app/assets/javascripts/security_configuration/sast/components/configuration_form.vue)
- Update `ConfigurationForm` to receive the analyzers configurations in addition to global + pipeline entities. Perhaps just the whole GQL response as-is? Perhaps rename `entities` prop to `sastCiConfiguration`, or `configuration`?
- emits new copy of above prop with changes included
- Update form submission logic to structure expected by ~backend (TBD)
~backend
- [ ] ~"backend-weight::3" Read SAST template file and `.gitlab-ci.yml` files to decide whether analyzer is enabled. This [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/235878) will address this work.
- [ ] ~"backend-weight::3" Read SAST template file and `.gitlab-ci.yml` files to get information about different variables at analyzer level. This [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/235880) will address this work.
- [ ] ~"backend-weight::3" Store the information about analyzers in `.gitlab-ci.yml` file [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/235799)
TBC @ssarka @rossfuhrman
## Relevant links:
- 13.5 release post - [analyzers & existing config parsing](https://gitlab.com/gitlab-com/www-gitlab-com/-/merge_requests/64767)
### Release notes
Release post items have been generated: https://gitlab.com/gitlab-com/www-gitlab-com/-/merge_requests/64767
epic