Memory update

[DanteNiewenhuis]

Summary

Reduced RAM usage of OpenDC by picking better datatypes and merging Task and ServiceTask.

Implementation Notes ⚒️

Reduced RAM usage with the following changes:

1. Removed Flavor and ServiceFlavor and moved the information to ServiceTask directly

2. Merged Task and ServiceTask. They contained the same information, so it was just using more RAM.

3. Updated variables of ServiceTask to reduce RAM

External Dependencies 🍀

N / A

Breaking API Changes ⚠️

• Task does not exist anymore, all previous usages of Task are updated.

Simply specify none (N/A) if not applicable.

[codecov]

Codecov Report

❌ Patch coverage is 70.18349% with 65 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.36%. Comparing base (59898b8) to head (fa7cbb7).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
.../opendc/compute/simulator/service/ServiceTask.java	67.70%	25 Missing and 6 partials ⚠️
...mulator/scheduler/timeshift/MemorizingTimeshift.kt	0.00%	6 Missing ⚠️
...tlin/org/opendc/compute/workload/WorkloadLoader.kt	16.66%	4 Missing and 1 partial ⚠️
...endc/compute/simulator/service/ComputeService.java	92.30%	0 Missing and 2 partials ⚠️
...otlin/org/opendc/compute/simulator/host/SimHost.kt	50.00%	0 Missing and 2 partials ⚠️
...simulator/scheduler/weights/VCpuCapacityWeigher.kt	0.00%	2 Missing ⚠️
...simulator/scheduler/weights/VGpuCapacityWeigher.kt	0.00%	2 Missing ⚠️
...mulator/telemetry/parquet/DfltTaskExportColumns.kt	66.66%	1 Missing and 1 partial ⚠️
...g/opendc/compute/workload/ComputeWorkloadLoader.kt	90.47%	1 Missing and 1 partial ⚠️
...endc/trace/formats/workload/FragmentTableWriter.kt	0.00%	2 Missing ⚠️
... and 8 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #379      +/-   ##
============================================
- Coverage     57.39%   57.36%   -0.04%     
  Complexity        1        1              
============================================
  Files           337      335       -2     
  Lines         11213    10788     -425     
  Branches       1041     1037       -4     
============================================
- Hits           6436     6188     -248     
+ Misses         4412     4235     -177     
  Partials        365      365              

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