Centralize info on limits for TON blockchain

[anton-trunov]

Is your feature request related to a problem? Please describe.

The documentation on various limits for TON blockchain is spread across various pages and it's hard to find. For instance, I'd like to know the maximal gas limit for internal/external messages, how large the contract state can be, what are the limitations on the number of tuple components, how deep cells can be, how large a dictionary can be, etc.

Describe the solution you'd like

Create a page similar to TVM Exit Codes with all the limits categorized and documented.

Additional context

No response

[reveloper]

We have [WIP] document for this https://github.com/ton-community/onboarding-sandbox/blob/main/metrics/metrics.csv, but we need to review and double-check before publishing this to documentation.