feat(diagnostics): Add frontend for heap dumps

[Josh-Matsuoka]

Fixes cryostatio/cryostat#134

Adds a frontend for interacting with the heap dumps system. This allows you to trigger and retrieve heap dumps from a target with the agent enabled via the diagnostics card and capture diagnostics page, then view them in a table and download or delete as desired. The filenames are generated by the agent and follow the format (target alias)-(random uuid).hprof

To test:

Setup
-Check out this PR, as well as cryostatio/cryostat-agent#671 and cryostatio/cryostat#984

• Build all 3, build the quarkus-agent sample application with the PR version of the cryostat agent.
• Run smoketest bash smoketest.bash -O -t quarkus-cryostat-agent
• Open the Web UI and test the functionality

Diagnostics Card

• Check that the Heap Dumps button appears on the diagnostics card.
• Verify that clicking the Invoke Heap Dumps button triggers 2 notifications, one for a successful invocation (Heap Dump Success), and one for a successful upload to the server (Heap Dump Uploaded)
• Verify that the redirect button becomes enabled and takes you to the Heap Dumps table

Capture Diagnostics Page

• Check that the Heap Dumps button appears on the capture diagnostics page.
• Verify that clicking the Invoke Heap Dumps button triggers 2 notifications, one for a successful invocation (Heap Dump Success), and one for a successful upload to the server (Heap Dump Uploaded)
• Verify that the redirect button becomes enabled and takes you to the Heap Dumps table

Heap Dumps Table

• Check that the earlier triggered heap dumps appear in the table with a name, last modified time, and file size that makes sense
• Verify that each table entry has a dropdown for downloading and deleting the heap dump.
• Verify that heap dumps can be downloaded and deleted.
• Verify that deleting a heap dump produces a notification (Heap Dump Deleted) and refreshes the table

[andrewazores]

Seems like a localized string is missing or the name is referenced incorrectly.