There are basically 2 big updates in this commit:

1) Split up each range type handler into a separate function
    (plus a few helper functions).
2) Export a type infer-er

The type infer-er is useful internally, but also helps me
feel more confident about code changes. In theory no 
type should ever collide with another type, so this 
function is kind of like the "canary in the coal mine" 
in that we should always be able to test a 1:1 range 
type from this function. If we can test the types 
thoroughly, we can be more confident each respective 
handler is working on the right set of data.

On that note, splitting up the logic for each range type 
makes me feel much more confident that each one is 
handled in a way that doesn't conflict with any other. 
More importantly, any potential changes to an existing 
range type or additions of new range types will: 
A) Not cause any changes to the existing ones and
B) Scale gracefully

On that final note of graceful scaling, I find the (very
common) method of basically extending a long 
if/else if/else block to be frightening from the 
perspective of ever needing to add things. I've found 
the method I use here (a dictionary lookup, in a bunch 
of cases) to be much easier to reason about: every 
addition adds a single dictionary entry, and the JS 
selects it (O(1)) when it's needed.

The date ranges can be used to represent periods of time
relative to arbitrary points in time, such as a fixed date or the
current moment.

Create backend route for dedicated Release page

See merge request gitlab-org/gitlab!23792

Remove existing to clarify examples

See merge request gitlab-org/gitlab!23987

Refactor merge request routing

See merge request gitlab-org/gitlab!23782

Added Monaco-based editor lite version

Closes #198618

See merge request gitlab-org/gitlab!23767

This introduces the bare-minimum Monaco editor for single-file edits
like those for Snippets, blobs and CI/CD configurations

Merge branch '197973-staged-and-unstaged-modification-tooltip-for-file-with-staged-changes-in-web-ide' into 'master'

Resolve "Staged and unstaged modification" tooltip

See merge request gitlab-org/gitlab!23847

Move SpamCheckService into spam folder

See merge request gitlab-org/gitlab!23915

Support design repo in project namespace transfer

See merge request gitlab-org/gitlab!23573

This commit adds the backend route for the dedicated release show page.
This page is hidden behind a `release_show_page` feature flag which is
disabled by default.

Delete a comment

See merge request gitlab-org/gitlab!23937

Add a `class_name: "::Project"` to a `belongs_to :project` in a spec

Closes #199424

See merge request gitlab-org/gitlab!23979

Merge branch '39505-extend-the-ability-to-clone-a-dashboard-so-it-would-copy-the-custom-metrics' into 'master'

Extend the ability to clone a dashboard so it would copy the custom metrics

See merge request gitlab-org/gitlab!21923

Fix missing 'Pipeline schedules' link

Closes #199088

See merge request gitlab-org/gitlab!23842

- Add test case for FOSS and EE project and group navbar structure.

Feature flag: adding of use_core_delta_islands

See merge request gitlab-org/gitlab!23850

Remove Elastic Stack cluster application feature flag

See merge request gitlab-org/gitlab!23058

Enable the app by default

To make metrics dashboard clonning fully function, we need to inclued
custom metrics defined by user.

Update Dependency Proxy to ultimate only

See merge request gitlab-org/gitlab!23925

update link to BATS

See merge request gitlab-org/gitlab!23866

docs: Revise upgrade versions in update readme

See merge request gitlab-org/gitlab!23952

Optimize ref name lookups in archive downloads

See merge request gitlab-org/gitlab!23890

More explicit Praefect documentation

See merge request gitlab-org/gitlab!23853

After another demo with the team, the configuration docs weren't
explicit enough. This change updates the docs to be even more explicit.

Add only backend API for view arbitrary commit in merge request - issue #62817

See merge request gitlab-org/gitlab!23701

Fix nav link in security submenu

See merge request gitlab-org/gitlab!23775

Changed color of allowed to fail badge from danger to warning

See merge request gitlab-org/gitlab!23437

The color was not inline with our color design guidelines and was giving
off the impression of an error.

Allow custom Guard command

See merge request gitlab-org/gitlab!23947

Upgrade Gitaly to v1.85.0

See merge request gitlab-org/gitlab!23945

This upgrade deprecates the branch parameter in UserSquash and removes
the revision parameter from GetAllLFSPointersRequest.