Add generic coverage task (#763)

**Todo:**
- [x] Finalize format for coverage file(s)
- [x] Add service support
- [x] Integration test
- [x] Merge #926 
- [x] Merge #929

src/pytypes/onefuzztypes/enums.py

@@ -80,6 +80,7 @@ class TaskFeature(Enum):
     expect_crash_on_failure = "expect_crash_on_failure"
     report_list = "report_list"
     minimized_stack_depth = "minimized_stack_depth"
+    coverage_filter = "coverage_filter"
 
 
 # Permissions for an Azure Blob Storage Container.
@@ -147,6 +148,7 @@ class TaskState(Enum):
 
 
 class TaskType(Enum):
+    coverage = "coverage"
     libfuzzer_fuzz = "libfuzzer_fuzz"
     libfuzzer_coverage = "libfuzzer_coverage"
     libfuzzer_crash_report = "libfuzzer_crash_report"

src/pytypes/onefuzztypes/models.py

@@ -172,6 +172,7 @@ class TaskDetails(BaseModel):
     preserve_existing_outputs: Optional[bool]
     report_list: Optional[List[str]]
     minimized_stack_depth: Optional[int]
+    coverage_filter: Optional[str]
 
     @validator("check_retry_count", allow_reuse=True)
     def validate_check_retry_count(cls, value: int) -> int:
@@ -406,6 +407,7 @@ class TaskUnitConfig(BaseModel):
     ensemble_sync_delay: Optional[int]
     report_list: Optional[List[str]]
     minimized_stack_depth: Optional[int]
+    coverage_filter: Optional[str]
 
     # from here forwards are Container definitions.  These need to be inline
     # with TaskDefinitions and ContainerTypes