Add fennel support #1297

Job	Run time
Container Build (ubuntu-latest, loongarch64-unknown-linux-gnu, loong64)	15m 1s
Build (ubuntu-latest, arm-unknown-linux-gnueabihf, use-cross)	3m 36s
MinSRV	53s
Code Coverage (ubuntu-latest)	2m 41s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, use-cross)	3m 39s
Build (ubuntu-latest, aarch64-unknown-linux-musl, use-cross)	3m 52s
Style (ubuntu-latest)	53s
Build (ubuntu-latest, i686-unknown-linux-gnu, use-cross)	3m 11s
Style (macos-latest)	2m 14s
Build (ubuntu-latest, i686-unknown-linux-musl, use-cross)	3m 25s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, use-cross)	3m 16s
Style (windows-latest)	2m 32s
Build (ubuntu-latest, x86_64-unknown-linux-musl, use-cross)	3m 40s
Build (macos-latest, x86_64-apple-darwin)	4m 31s
Build (macos-latest, aarch64-apple-darwin)	3m 55s
Build (windows-latest, i686-pc-windows-gnu)	4m 5s
Build (windows-latest, i686-pc-windows-msvc)	5m 48s
Build (windows-latest, x86_64-pc-windows-gnu)	7m 2s
Build (windows-latest, x86_64-pc-windows-msvc)	5m 20s
	1h 19m 34s

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