feat!: add getServerSession and SessionProvider

[jonas-jonas]

BREAKING CHANGES: This patch changes the underlying mechanism of the `useSession` hook. It now requires a `<SessionProvider>` in the tree above its usage.

You can now provide a session object to the initial store of the `SessionProvider` making it possible to fetch the session on the server.

If you use the `<Settings />` component, and make use of the integrated user menu, you must now wrap the whole component in the `SessionProvider`.

Related Issue or Design Document

Checklist

• I have read the contributing guidelines and signed the CLA.
• I have referenced an issue containing the design document if my change introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security vulnerability.
  If this pull request addresses a security vulnerability,
  I confirm that I got approval (please contact [email protected]) from the maintainers to push the changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added the necessary documentation within the code base (if appropriate).

Further comments

[codecov]

Codecov Report

Attention: Patch coverage is 55.95238% with 37 lines in your changes missing coverage. Please review.

Project coverage is 44.05%. Comparing base (df98c2b) to head (f0e2bac).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #309      +/-   ##
==========================================
- Coverage   44.25%   44.05%   -0.20%     
==========================================
  Files         127      131       +4     
  Lines        1837     1893      +56     
  Branches      265      276      +11     
==========================================
+ Hits          813      834      +21     
- Misses       1016     1053      +37     
+ Partials        8        6       -2     

Components	Coverage Δ
@ory/elements-react	38.07% <47.45%> (-0.61%)	⬇️
@ory/nextjs	70.05% <76.00%> (+0.35%)	⬆️

[aeneasr]

Looks good to me on the conceptual level. Did not check the code itself