Add jwt keys

[hulto]

What type of PR is this?

/kind feature

What this PR does / why we need it:

• Adds a JWT to claim tasks API
• Agent passes jwt to report and fetch calls
• Server verifies JWT is not valid
• For now warns when invalid will error when imixv1 is removed.

Which issue(s) this PR fixes:

Fixes #

[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
3029    ±0	3029    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#480	✅	3029	3029	0	0	0	0	29.4s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
3029	0	0	10.3s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_error	3	5.5s	10.3s
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_error	3	5.5s	10.3s
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_error	3	5.5s	10.3s
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_output	3	5.4s	10.3s
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_output	3	5.4s	10.3s
imixv2::bin/imixv2: tests::task_tests::test_task_streaming_output	3	5.4s	10.3s
eldritch: http::get_impl::tests::test_get_empty_params_and_headers	3	2.1s	6.4s
eldritch: http::get_impl::tests::test_get_empty_params_and_headers	3	2.1s	6.4s
eldritch: http::get_impl::tests::test_get_empty_params_and_headers	3	2.1s	6.4s
eldritch: http::get_impl::tests::test_get_no_params_or_headers	3	2.1s	6.4s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

Github Test Reporter by CTRF 💚

🔄 This comment has been updated

[KCarretto]

Please also remove the committed 83MB tavern binary tavern/tavern

[KCarretto]

I feel pretty strongly about adding a TaskContext to make this cleaner, otherwise lgtm

[KCarretto]

🤞