build: add WebAssembly configuration for math/base/special/abs2 and math/base/special/sqrt

[aman-095]

Description

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This pull request adds webassembly configuration for abs2 and sqrt.

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• Read, understood, and followed the contributing guidelines.

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@stdlib-js/reviewers

[kgryte]

@aman-095 You need to do more than just copy-paste. You also need to set option parameters in other configurations, as well, and you need to add wasm to the list of configuration options.