[18.0][ADD] splitstudio lead import

[parzewski]

Summary

Adds a new splitstudio_lead_import module to split-addons: a persistent
wizard that imports CRM leads from XLSX/CSV spreadsheets with advanced
duplicate detection and rich header-to-field mapping.

The wizard is models.Model (not models.TransientModel) so import
sessions can be saved, listed and reviewed later from the new Import
Sessions menu.

Features

• Duplicate detection before any record is created, against both
  crm.lead and res.partner (email, lead/contact name, company name).
• Auto-creation of missing utm.campaign and crm.tag records from
  the spreadsheet (mirrors how tags were already handled).
• Country resolution by ISO code first (BR, US), then by name
  (Brazil, United States).
• Description column is stored on the lead and posted as a
  chatter internal note (mail.mt_note, visible in Anotações
  internas).
• Priority column maps English (Low/Medium/High/Very High),
  Portuguese (Baixa/Média/Alta/Muito Alta) and numeric
  (0/1/2/3) values to the crm.lead priority stars widget.
• Recognised spreadsheet columns (English and Portuguese aliases):
  • oportunidade / opportunity / name (lead/opportunity name)
  • contact_name / Contato (person name for partner match)
  • email / email_from (email)
  • partner_name / Empresa (company name)
  • phone / Telefone
  • campaign / campaign_id / Campanha (auto-created if missing)
  • tags / tag_ids / Etiquetas (comma- or semicolon-separated,
    auto-created if missing)
  • description / Anotações internas (chatter internal note)
  • priority / Prioridade
  • website / Site
  • city / Cidade
  • country_id / País (ISO code or full name)
• Pipelines menu replaces the default Leads menu and exposes
  one entry per sales team that has use_leads=True, so each pipeline
  has its own filtered action.
• Move to another pipeline wizard (crm.lead.reassign.wizard)
  opens from the lead form header since team_id is now readonly
  to enforce pipeline discipline.

Tests

Adds tests/test_lead_import_fields.py with 9 tests covering the
header aliases, priority mapping (text and number), description +
chatter note, country resolution, website/city/country round-trip,
campaign auto-creation and duplicate detection. The existing
tests/test_lead_import_wizard.py was updated to provide a sales
team to the wizard (now required).

odoo.tests.result: 0 failed, 0 error(s) of 10 tests

Changelog

• [ADD] initial commit (commit 8b6e2f8).
• [LINT] apply pre-commit (ruff, ruff-format, pylint-odoo,
  oca-checks-odoo-module, oca-gen-addon-readme, whool-init,
  oca-gen-external-dependencies) (commit db80980).

Notes for reviewers

• team_id is now readonly=True on the lead/opportunity form. Use
  the Move to another pipeline button in the form header to
  reassign a record to a different team.
• The conversion wizard is overridden to restrict team_id to teams
  with use_opportunities=True (so a lead on the INTAKE team
  cannot be converted to an opportunity on SCOUT EVENTOS).
• The wizard dropdown for team_id uses domain=[('use_leads', '=', True)] so you can only import into a pipeline that accepts
  leads.
• A tools/link_orphans.py helper is shipped for one-off
  back-fills (linking orphan opportunities to a partner by name);
  it is not loaded by the manifest and is meant to be piped
  into odoo shell.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (3aa1649) to head (6e16d62).

Additional details and impacted files

@@             Coverage Diff             @@
##              18.0        #4     +/-   ##
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  Coverage   100.00%   100.00%             
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  Files            2        17     +15     
  Lines           45      1427   +1382     
  Branches         0       108    +108     
===========================================
+ Hits            45      1427   +1382     

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[DenerWilliam]

LGTM