feat: suggestion tests

tests/cases/file_path

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+case="file path typo"
+command="cd ./correc"
+error="no such file or directory"
+expect="cd ./correct"
+
+mkdir -p correct

tests/cases/privilege

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+case="privilege"
+command="pacman -Syu"
+error="you cannot perform this operation unless you are root"
+expect="sudo pacman -Syu"

tests/cases/regex_cmd

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+case="regex: command"
+command="touch dir/file"
+error="no such file or directory"
+expect="\
+mkdir --parents dir/ &&
+touch dir/file\
+"

tests/cases/regex_err

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+case="regex: error"
+command="cargo built"
+error="
+error: no such command: \`built\`
+Did you mean \`build\`?
+"
+expect="cargo build"

tests/cases/regex_opt

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+case="regex: options"
+command="rm correc -r"
+error="no such file or directory"
+expect="rm -r ./correct"
+
+mkdir -p correct

tests/cases/typo

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+case="command typo"
+command="echp"
+error="command not found"
+expect="echo"