feat: add feature list section to README with mise CLI description #8

Job	Run time
test-scenarios (mise)	2m 40s
test-global	5s
test (mise, ubuntu:focal)	24s
test (mise, ubuntu:jammy)	27s
test (mise, debian:11)	26s
test (mise, debian:12)	24s
test (mise, mcr.microsoft.com/devcontainers/base:ubuntu)	30s
test (mise, mcr.microsoft.com/devcontainers/base:debian)	33s
test (mise, mcr.microsoft.com/devcontainers/base:noble)	35s
	6m 4s

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