fix: fermyon/spin -> spinframework/spin

[bacongobbler]

All of the repositories changed in this commit have been migrated to the spinframework org.

This coincides with other changes like #1503.

[github-actions]

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[bacongobbler]

CI will go green once spinframework/spin-go-sdk#21 has been merged.

[vdice]

Thanks for these updates @bacongobbler.

Question around the updates involving the spin go sdk: With the search/replace approach, URLs are updated to eg github.com/spinframework/spin/sdk/go/v2/http; yet the go sdk has since been broken out to https://github.com/spinframework/spin-go-sdk. Should we update appropriately? eg spinframework/spin/sdk/go/v2 -> spinframework/spin-go-sdk, etc?

[bacongobbler]

Good catch. Yes, the new module name is github.com/spinframework/spin-go-sdk/http so the import paths should be updated to reflect that.

https://github.com/spinframework/spin-go-sdk/blob/f911142cc434d007c25eb03d11057c92a7f322d7/examples/http-outbound/http-to-same-app/main.go#L7

[vdice]

Good catch. Yes, the new module name is github.com/spinframework/spin-go-sdk/http so the import paths should be updated to reflect that.

Actually, as I was revising import paths, I realized I shouldn't touch the docs in the older spin/v1 and spin/v2 folders, since the examples/usage may be particular to the go sdk versions used at the time. So, assuming the older go sdk versions/URLs can still be used (i.e. they aren't broken), we should leave these be.

Then, while updating the current spin/v3 docs, I realized the go templates in the spin repo still reference the v2 version of the go sdk (see also spinframework/spin#3106). That, combined with a current unfamiliarity as to whether examples/usage will need to change when bumping to the new go sdk and the new sdk doesn't yet appear to have a tag or versioned release, I figured we should leave these be until 1. the go templates are updated and 2. we're ready for a first versioned release of the new go sdk (also, perhaps we're waiting for wasip2 support to land) cc @adamreese

Mind you, we're also about to remove all spin/* directories in #1512 😉 so mostly the above applies to the spin documentation in its new home: https://github.com/spinframework/spin-docs

Therefore, I've only rebased this branch to fix the conflicts on main and will merge in its current form. Thanks again!