Update UI docs links to use .md extension.

Changelog: changed

Changelog: changed
EE: true

Changelog: changed

This re-names a partial from "report" (generic) to "score"
(specific) to slightly improve clarity in the code.

DevOps Report (singular) actually refers to 2 features. That has caused
confusion. This changes it to be DevOps Reports (plural) in the UI, to
indicate it is a category. This aligns the app with the marketing
content, which already uses the plural version.

This also fixes some references to DevOps Report that should be
references to DevOps Adoption or DevOps Score.

Changelog: changed

We're replacing the use of HAML's help_page_path
by JS helpPagePath.

We also move the callout into the
DevOps Score tab within the EE
feature.

Changelog: changed

The DevOps Score tab was redesigned in
https://gitlab.com/gitlab-org/gitlab/-/issues/271244
and the "helpful links to articles and GitLab docs,
to help you improve your scores" that the docs mention
were removed.

This removes these mentions from the docs and the UI callout.

Changelog: changed

The empty state is currently being handled outside
of the vue app. This commit moves it into the
devops score vue app.

Changelog: changed

Changelog: changed

- Makes the callout close button a tertiary one
- Removes the monospaced font for branch dropdown results

| find | replace |
| ------ | ------ |
| `(^(?!.*gl-button).*class:.*)btn (.*$)` | `$1gl-button btn $2` |
| `(^(?!.*gl-button).*)(\.btn[\.{])` | `$1.gl-button$2` |

This file should be an index file in a subdirectory. Fixing that.

This change the last updated time to devops score page.

This removes references to EE only code from FOSS views.

Specs are added at the controller and view level to confirm the
behaviour.

This change enables the devops_adoption_feature flag by default if the
feature is already in use.

This restores the recently-removed feature flag for the DevOps Adoption
Report feature, except now defaulting to false, and adds a "Beta
feature" note to the documentation. This is intended to prepare us to
pivot the feature in the near future, which is likely to involve
breaking changes.

Rename product analytics to intelligence docs

This commit remove thes devops_adoption_feature feature flag.
The flag was defaulted to true in 13.7 and is now being
removed in 13.8.

In this commit we also rename the feature flag
from devops_adoption to devops_adoption_feature

Move the DevOps Adoption tab to ee

Ref:
https://gitlab.com/gitlab-org/gitlab/-/issues/273406

At the same time, move the devops score emptry
state initialization out of DOMContentLoaded.

This commit also introduces the feature flag
for the tabs.

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

This MR moves the docs from telemetry to product_analytics

And into a page specific bundle which is imported in the
dev ops reports page.

Add changelog
Sync pairing with @jeldergl