feat(jj): add `su` alias for `jj squash`

Signed-off-by: Seongmin Lee <boltlessengineer@proton.me>

boltless.me 5800d263 ade1ae06

verified
Changed files
+3
jj
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jj/config.toml
··· 1 1 "$schema" = "https://jj-vcs.github.io/jj/latest/config-schema.json" 2 2 3 + [aliases] 4 + su = ["squash"] 5 + 3 6 [ui] 4 7 default-command = ["log", "--no-pager"] 5 8 should-sign-off = true