Add support for authorization header

[giswqs]

import anymap

# Create a map with authorization headers
m = anymap.Map(
    center=[-74.0060, 40.7128],
    zoom=12,
    request_headers={"Authorization": "Bearer YOUR_TOKEN_HERE"},
)

m

[github-actions]

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[Copilot]

Pull request overview

This PR adds support for custom HTTP headers (specifically authorization headers) to MapLibreMap, enabling access to private tile servers that require authentication. The implementation uses MapLibre GL JS's transformRequest callback to inject custom headers into all tile requests.

Key changes:

• Added request_headers parameter to MapLibreMap for passing custom HTTP headers
• Implemented transformRequest callback in JavaScript to apply headers to tile requests
• Created comprehensive documentation with examples showing various authentication scenarios

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
anymap/maplibre.py	Added request_headers traitlet with documentation in the class docstring
anymap/static/maplibre_widget.js	Implemented transformRequest callback to inject custom headers into tile requests
docs/examples/maplibre/authorization_headers_example.ipynb	Added comprehensive notebook with 6 examples demonstrating authorization header usage

Comments suppressed due to low confidence (1)

anymap/maplibre.py:134

• The request_headers parameter is missing from the __init__ method signature. While it can be passed via **kwargs, it should be an explicit parameter for better API discoverability and type checking. Add request_headers: Dict[str, str] = None to the parameter list and include it in the Args section of the docstring.

    def __init__(
        self,
        center: List[float] = [0, 20],
        zoom: float = 1.0,
        style: Union[str, Dict[str, Any]] = "dark-matter",
        width: str = "100%",
        height: str = "680px",
        bearing: float = 0.0,
        pitch: float = 0.0,
        controls: Dict[str, str] = {
            "navigation": "top-right",
            "fullscreen": "top-right",
            "scale": "bottom-left",
            "globe": "top-right",
            "layers": "top-right",
        },
        projection: str = "mercator",
        add_sidebar: bool = False,
        sidebar_visible: bool = False,
        sidebar_width: int = 360,
        sidebar_args: Optional[Dict] = None,
        layer_manager_expanded: bool = True,
        **kwargs: Any,
    ) -> None:

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