MapML LayerGroup DeLayer and Raster Links

[turingtestfail]

tests part one

started on documentation

more documentation

cleanup and test fixes

clean

html output was missing feature and tiles and multi

more test fixes

PR responses

cleanup

added features tiles to alternate links

style and alternate style

started on grid management

Added bbox to gridloc

starting

featurebuilder handle multiple layers

feature support from with multiple

Got multi working

started on tile creation

started on matching tileset to tiles

tile creation organized and working

started on raster tile test

working on test

got best zoom function working

fixed PMD issue

started on wmts links

raster tile cache with test passing

added getfeatureinfo layergroup test

Checklist

• I have read the contribution guidelines.
• I have sent a Contribution Licence Agreement (not required for small changes, e.g., fixing typos in documentation).
• First PR targets the main branch (backports managed later; ignore for branch specific issues).

For core and extension modules:

• New unit tests have been added covering the changes.
• Documentation has been updated (if change is visible to end users).
• The REST API docs have been updated (when changing configuration objects or the REST controllers).
• There is an issue in the GeoServer Jira (except for changes that do not affect administrators or end users in any way).
• Commit message(s) must be in the form [GEOS-XYZWV] Title of the Jira ticket.
• Bug fixes and small new features are presented as a single commit.
• Each commit has a single objective (if there are multiple commits, each has a separate JIRA ticket describing its goal).

The PR will be merged when all the build checks are green (see automated QA checks), there is a code committer review, and the checklist has been fulfilled.

[prushforth]

@turingtestfail you may not be aware of, and it may not be useful, but there's the TiledCRS.fitProjectedBoundsToDisplay(Bounds projectedBounds, Bounds pixelBounds) method that calculates the zoom value for a given projected bbox given a pixel based-bbox of a size it must fit within. It's used to roughly calculate the zoom at which the preview HTML must start, in the MapMLHTMLOutput.computeZoom(MapMLProjection projTye, ReferencedEnvelope projectedBbox) method. FYI...