Add wasm-branch-hinting

Author: ddbeck

features/wasm-branch-hinting.yml

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+name: Branch hinting (WebAssembly)
+description: Branch hints in WebAssembly allows a browser to optimize performance when a branch is a likely to take a specific path.
+spec: https://github.com/WebAssembly/branch-hinting/blob/main/proposals/branch-hinting/Overview.md
+group: webassembly
+compat_features:
+- webassembly.branch-hinting

features/wasm-branch-hinting.yml.dist

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+# Generated from: wasm-branch-hinting.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support: {}