Migration to version 9.0

[pedrobaeza]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-9.0

Modules to migrate

• knowledge by @naousse in [9.0] knowledge #75
• document_page by @naousse in [9.0] document_page #76
• document_page_approval by @naousse in [9.0] document_page_approval #77
• attachments_to_filesystem
• document_page_multi_company
• document_no_unique_filenames
• document_choose_directory - By @mohamedhabibchallouf - migrate document_choose_directory to v9 #107
• document_reindex
• document_multiple_records
• attachment_preview - @cq-clearcorp - 9.0 attachment preview gs #108
• document_url by @JonathanNEMRY in [MIG] from 8.0 to 9.0 document_url #89
• attachment_edit
• document_ocr

[github-actions]

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