Generate emoji keyword for Estonian language

[Ekikereabasi-Nk]

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Contributor checklist

• [x] This pull request is on a separate branch and not the main branch

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Description

This pull request adds functionality to generate keyword-emoji relationships specifically for Estonian words. The script leverages the gen_emoji_lexicon method from the process_unicode module to generate emoji mappings for Estonian keywords.

• ISSUE_NUMBER

  -#227

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Maintainer checklist

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