cody/modelconfig: add thinking models config examples

[taras-yemets]

Add examples of thinking models configuration (for more context see this thread).

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Name	Status	Preview	Comments	Updated (UTC)
sourcegraph-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 30, 2025 11:06am

[loujar]

Thanks for the updates. It doesn't need to be tackled in this PR, but I think we should reconcile our context window recommendations with the expanded context window length for Sonnet 3.7 we are documenting here
cc: @MaedahBatool @aramaraju

[aramaraju]

Thanks for the updates. It doesn't need to be tackled in this PR, but I think we should reconcile our context window recommendations with the expanded context window length for Sonnet 3.7 we are documenting here cc: @MaedahBatool @aramaraju

@MaedahBatool @alexromano Haven't we updated the context window for all the models already? If so, I agree with Louis, we should update them. Or are we still rolling them out in phases? The modelConfig examples/docs can still have the expanded limits as it's more likely the BYOK customers on that page, so we shouldn't have cost concerns.