add deprecation warnings to RR v6 and Remix v2

[ryanflorence]

No description provided.

[brophdawg11]

#11750

[brophdawg11]

• Add warnings for stable future flags
• Add deprecation warnings to APIs - json/defer in Remix
  • Probably can't warn from the utils but can detect the type of response returned from loader/action and warn there?
• Remove json/defer in Rr v7
• Update redirect utils in v7 to use data under the hood

[brophdawg11]

remix-run/remix#10126

[brophdawg11]

#12144

[github-actions]

🤖 Hello there,

We just published version 6.28.0-pre.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 7.0.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.1-pre.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.1 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.2-pre.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!