Add extra_output container, rename extra container

[Porges]

Summary of the Pull Request

• Breaking (but as far as I know this feature is not yet in use): rename the extra_container to extra_setup_container.
• Add: the extra_output_container, which pushes its outputs continually.
  • We may also want a type of container which both pushes & pulls? See discussion below.
• Improved: if onefuzz-task fails upon launch, we will log its output for diagnosis (might close Failures happening before the task channel initialization are not reported #3113)

---

Some thoughts for the future:

We might want to redesign the containers so that we have something like the following which is passed to the agent, and the agent doesn't need to know the specifics of the containers supplied:

{
    // ...
    "containers": {
        "extra_setup_dir": {
            "mode": "pull",
            "container_name": "yyy",
        },
        "extra_output_dir": {
            "mode": "push",
            "continuous": true, // keep pushing while job is running
            "container_name": "xxx"
        }
    }
}

At the moment the agent needs to know what each container is for, for each task type. A more generic and flexible method might be simpler overall.

[codecov-commenter]

Codecov Report

Merging #3064 (6ec83ae) into main (630b083) will decrease coverage by 0.05%.
The diff coverage is 4.01%.

@@            Coverage Diff             @@
##             main    #3064      +/-   ##
==========================================
- Coverage   29.62%   29.57%   -0.05%     
==========================================
  Files         332      332              
  Lines       38948    39056     +108     
==========================================
+ Hits        11537    11552      +15     
- Misses      27411    27504      +93     

Impacted Files	Coverage Δ
src/ApiService/ApiService/OneFuzzTypes/Enums.cs	32.39% <ø> (ø)
src/ApiService/ApiService/onefuzzlib/Config.cs	0.00% <0.00%> (ø)
src/ApiService/ApiService/onefuzzlib/Defs.cs	0.00% <0.00%> (ø)
src/ApiService/ApiService/onefuzzlib/Scheduler.cs	14.51% <0.00%> (-0.66%)	⬇️
src/agent/onefuzz-agent/src/debug.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-agent/src/setup.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-agent/src/validations.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-task/src/local/common.rs	0.00% <0.00%> (ø)
...rc/agent/onefuzz-task/src/local/libfuzzer_merge.rs	0.00% <0.00%> (ø)
...ent/onefuzz-task/src/local/libfuzzer_test_input.rs	0.00% <0.00%> (ø)
... and 28 more

[Porges]

Code changes are ready for looking at but this needs its own integration test to be fully complete.