Merge torrust/torrust-tracker#1567: Overhaul stats: Decouple stats an… #3231

Job	Run time
Formatting	19s
Build on ubuntu-latest (nightly)	3m 52s
Build on ubuntu-latest (stable)	3m 58s
Build on macos-latest (stable)	4m 22s
Build on macos-latest (nightly)	4m 7s
Build on windows-latest (nightly)	7m 5s
Build on windows-latest (stable)	7m 15s
Static Analysis (nightly)	2m 7s
Static Analysis (stable)	2m 16s
Units (nightly)	14m 42s
Units (stable)	13m 58s
E2E (nightly)	22m 30s
E2E (stable)	22m 25s
	1h 48m 56s

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