[ci] init e2e test struct

[zhulinJulia24]

Initializing the testing framework allows for quick addition of sft、rl and pretrain related test cases through configuration.
On the quality side, focus on the code development of the validation and regression points themselves(train、infer、eval and so on).

[HAOCHENYE]

Why this arguments is required?

[zhulinJulia24]

for more flexible specification of test code

[HAOCHENYE]

The hierarchy here seems unusual. From the original semantics, the xtuner repository should have the following test levels:

• Tasking: sft & pretrain & rl
• Training config: config path
• Resource: test resource

Xtuner's configuration files can determine the first two, while the last one is determined by clusterx's configuration. What do you think about adjusting the hierarchy like this:

case:
  - task: <rl | sft | pretrain>
    config: <config path>
    assert_info: <...>
    resources: [<resource_name, including env>]

Then resources should contain test resources like gpu, npu, etc., with different names. In each case item, you can select which platforms and resource specifications to test on.