Passing scheduler to EventLoopDispatcher, schedulerWrapBlockingFunction and through RealmConfig

[kraenhansen]

What, How & Why?

This allows the JS SDK to pass a util::Scheduler to the EventLoopDispatcher and schedulerWrapBlockingFunction utilities as well as through the RealmConfig when opening a Realm.

☑️ ToDos

• 📝 Changelog update
• 🚦 Tests (or not relevant)
• C-API, if public C++ API changed
• bindgen/spec.yml, if public C++ API changed

[kraenhansen]

This could probably merge, but it's unlikely that the JS PR depending on it will merge anytime soon.

[coveralls-official]

Pull Request Test Coverage Report for Build kraen.hansen_76

Details

• 0 of 4 (0.0%) changed or added relevant lines in 1 file are covered.
• 58 unchanged lines in 17 files lost coverage.
• Overall coverage increased (+0.002%) to 91.097%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
test/object-store/util/event_loop.cpp	0	4	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/realm/array_timestamp.cpp	1	97.77%
src/realm/index_string.cpp	1	85.17%
src/realm/list.cpp	1	87.37%
src/realm/mixed.cpp	1	86.46%
src/realm/sync/network/http.hpp	1	82.27%
src/realm/sync/noinst/server/server_history.cpp	1	62.92%
src/realm/uuid.cpp	1	98.48%
test/fuzz_tester.hpp	1	57.73%
test/object-store/util/event_loop.cpp	1	74.19%
src/realm/query_expression.cpp	2	86.62%

Totals
Change from base Build 2580:	0.002%
Covered Lines:	217376
Relevant Lines:	238621

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💛 - Coveralls