Added PC tasks, email templates and Canadian province changes instructions for relocations

Why is this change being made?

• Added Canadian province changes instructions for relocations as confirmed by legal here.
• Added PC tasks from Relocation Process for People Connect doc to handbook incl. links to email templates
• Clarified wording of tasks
• Added notification of PEO
• Moved country specific tasks to appropriate sections
• Removed creation of contracts from ### Once Approved since it's mentioned in ### Contract Phase
• Removed "Payroll set up (New Country)" since we don't allow relocations to countries that don't have payroll already set up
• Added specifics for France contracts

FYI @gl-people-connect-team

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
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  • The when to get approval handbook section explains the workflow in more detail
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