Add M7 examples to CI #388

Job	Run time
examples_basic	22s
Dry Run (slothy.targets.arm_v7m.cortex_m7)	18s
Dry Run (slothy.targets.arm_v81m.cortex_m55r1)	3m 25s
examples_ntt_kyber_dilithium_helium_core	2m 18s
examples_ntt_kyber_dilithium_neon_core	19m 45s
Dry Run (slothy.targets.arm_v81m.cortex_m85r1)	2m 6s
fft	6m 19s
Dry Run (slothy.targets.aarch64.cortex_a55)	7m 41s
Dry Run (slothy.targets.aarch64.cortex_a72_frontend)	26m 25s
sqmag	42s
Dry Run (slothy.targets.aarch64.apple_m1_firestorm_experimental)	20m 16s
tutorial	13m 10s
Dry Run (slothy.targets.aarch64.apple_m1_icestorm_experimental)	17m 45s
	2h 0m 32s

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