Update model sizes for github-copilot

[nulladdict]

A bunch of model sizes are wrong. I fixed them
The sizes are also approximate (some are kinda weird and don't end with zeros, e.g. 127805 input size for gpt 5.2). I didn't fix that

[nulladdict]

I just realized the screenshot from vscode shows input and output sizes but all copilot models are defined in terms of context size and output size (no input)

Don't really know if it's correct feel free to close this PR if it's a totally wrong approach

[rekram1-node]

There is a concept of input actually

[rekram1-node]

Look at openai gpt-5 variant models (from openai provider)

[messense]

Here is the models from copilot /v1/models api, hope it helps!

copilot-models.json

[nulladdict]

The input and output values from the json don't match the ones showed in vscode. The gemini models have 109k input size in vscode and 128k in the json

I'm not entirely sure which ones are correct. I've added context sizes from the json but kept input and output sizes from vscode