Embed bundled packs in binary — fix hardcoded CARGO_MANIFEST_DIR path #19

Job	Run time
Web UI Gates	3m 46s
Build (aarch64-apple-darwin)	3m 36s
Build (x86_64-unknown-linux-gnu)	6m 20s
Build (x86_64-pc-windows-msvc)	13m 21s
Build (x86_64-apple-darwin)	8m 51s
Publish GitHub release (tags only)	9s
Publish to public repo (tags only)	6s
	36m 9s

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