LeagueM BId Adapter: initial release

[mo4rock]

Type of change

• New bidder adapter

Description of change

• contact email of the adapter’s maintainer: prebid@league-m.com
• test parameters for validating bids:

[
    {
        code: 'test-banner',
        mediaTypes: {
            banner: {
                sizes: [[300, 250]],
            }
        },
        bids: [
            {
                bidder: 'leagueM',
                params: {
                    env: 'leagueM',
                    pid: 'aa8217e20131c095fe9dba67981040b0',
                    ext: {}
                }
            }
        ]
    },
    {
        code: 'test-video',
        sizes: [ [ 640, 480 ] ],
        mediaTypes: {
            video: {
                playerSize: [640, 480],
                context: 'instream',
                skipppable: true
            }
        },
        bids: [{
            bidder: 'leagueM',
            params: {
                env: 'leagueM',
                pid: 'aa8217e20131c095fe9dba67981040b0',
                ext: {}
            }
        }]
    }
]

Other information

Docs RP: prebid/prebid.github.io#6434

[Copilot]

Pull request overview

This PR introduces a new bidder adapter for LeagueM, following the established pattern of using the shared xeUtils bidder utilities. The adapter supports both banner and video ad formats and integrates with the LeagueM demand source via their prebid endpoint.

Changes:

• Added LeagueM bidder adapter implementation using shared xeUtils utilities
• Added comprehensive test suite covering validation, request building, response interpretation, and user syncs
• Added adapter documentation with test parameters and usage examples

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
modules/leagueMBidAdapter.js	Core adapter implementation that configures the bidder with required parameters and endpoint
modules/leagueMBidAdapter.md	Documentation file with adapter overview, description, and test parameters
test/spec/modules/leagueMBidAdapter_spec.js	Comprehensive test suite covering all adapter functionality including edge cases

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