Add support for market interactions

[Gobot1234]

Summary

Add market support to the library.

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• This PR adds something new (e.g. new method or parameters).

TODO

• Support for listing purchasing and confirmations
• Support for searching listings with proper filtering
• Inverting https://www.desmos.com/calculator/4pd6iag8go, https://gist.github.com/Gobot1234/b919194d5de2c5b0db92a656ef97a175 and picking min/max/raising when duplicate values?

[SingularBunny]

Why not use another endpoint without the need to extract data from HTML?
For example, like this:

    async def get_listings(
            self,
            appid: int,
            market_hash_name: str,
            start: int = 0,
            count: int = 20,
            currency: int = 1,
            language: str = "english",
            response_format: str = "json"
    ) -> dict[str, Any]:
        params = {
            "start": start,
            "count": count,
            "currency": currency,
            "language": language,
            "format": response_format
        }

        params = {k: v for k, v in params.items() if v is not None}

        return await self.get(URL.COMMUNITY / f"market/listings/{appid}/{market_hash_name}/render",
                              params=params)

The code returns Json. It is much more clear.

[Gobot1234]

Why not use another endpoint without the need to extract data from HTML? For example, like this:

    async def get_listings(
            self,
            appid: int,
            market_hash_name: str,
            start: int = 0,
            count: int = 20,
            currency: int = 1,
            language: str = "english",
            response_format: str = "json"
    ) -> dict[str, Any]:
        params = {
            "start": start,
            "count": count,
            "currency": currency,
            "language": language,
            "format": response_format
        }

        params = {k: v for k, v in params.items() if v is not None}

        return await self.get(URL.COMMUNITY / f"market/listings/{appid}/{market_hash_name}/render",
                              params=params)

The code returns Json. It is much more clear.

Thanks! I wasn't aware of this.

[Gobot1234]

Oh this doesn't include the name_id, unfortunately.

[SingularBunny]

Indeed. I could only find it in one place, and it's hardcoded there:

Market_LoadOrderSpread( 176288467 );	// initial load
--
  | PollOnUserActionAfterInterval( 'MarketOrderSpread', 5000, function() { Market_LoadOrderSpread( 176288467 ); }, 2 * 60 * 1000 );
Not looks like meaninfully provided value.

doesn't look like the value that is specifically returned.