I want Goja's JavaScript Runtime to support the BigInt-oriented DataView methods on existing DataView…

I want Goja's JavaScript Runtime to support the BigInt-oriented DataView methods on existing DataView…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Given const dv = new DataView(new ArrayBuffer(8)) , calling dv.setBigInt64(0, -2n, false) should return undefined…

The task

Given `const dv = new DataView(new ArrayBuffer(8))`, calling `dv.setBigInt64(0, -2n, false)` should return `undefined` and a later `dv.getBigInt64(0, false)` should return `-2n`. With the same buffer, `dv.setBigUint64(0, 0x0102030405060708n, true)` should store the value in little-endian byte order, and…

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.