feat(spell-check): support installing dict packages

[kenji-miyake]

Description

It is useful if we can add dict packages.

Users need to import dict packages in their .cspell.json.

// .cspell.json
{
  ...
  "import": ["@tier4/cspell-dicts/cmake/cspell-ext.json"],
  ...
}

Related links:

• https://github.com/tier4/cspell-dicts
• https://github.com/streetsidesoftware/cspell-dicts

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[kenji-miyake]

Test result 49e77d2: https://github.com/autowarefoundation/autoware-github-actions/runs/8289099228?check_suite_focus=true#step:3:10