[WIP] Implement Rule 0.2.4 for unused functions

[Copilot]

Thanks for the feedback on #1044. I've created this new PR, which merges into #1044, to address your comment. I will work on the changes and keep this PR's description up to date as I make progress.

Original PR: #1044
Triggering comment (#1044 (comment)):

@copilot

Fix format:

/src/debug/protocol/controller.cpp:206:61: error: code should be clang-formatted [-Wclang-format-violations]
engine_->resume(ExecutionRequestKind::CONTINUE);
^
./tests/service/test_protocol.cpp:247:39: error: code should be clang-formatted [-Wclang-format-violations]
Protocol protocol(controller);
^
./tests/service/test_protocol.cpp:250:81: error: code should be clang-formatted [-Wclang-format-violations]
controller.initialize(init_args, [](const InitializeResponseBody &) {});
^
./tests/service/test_protocol.cpp:254:27: error: code should be clang-formatted [-Wclang-format-violations]
args.threadId = 1;
^
./tests/service/test_protocol.cpp:256:61: error: code should be clang-formatted [-Wclang-format-violations]
auto response = controller.continue_execution(args);
^
./tests/service/test_protocol.cpp:279:39: error: code should be clang-formatted [-Wclang-format-violations]
Protocol protocol(controller);
^
./tests/service/test_protocol.cpp:282:81: error: code should be clang-formatted [-Wclang-format-violations]
controller.initialize(init_args, [](const InitializeResponseBody &) {});
^
./tests/service/test_protocol.cpp:286:27: error: code should be clang-formatted [-Wclang-format-violations]
args.threadId = 1;
^
./tests/service/test_protocol.cpp:309:39: error: code should be clang-formatted [-Wclang-format-violations]
Protocol protocol(controller);
^
./tests/service/test_protocol.cpp:312:81: error: code should be clang-formatted [-Wclang-format-violations]
controller.initialize(init_args, [](const InitializeResponseBody &) {});
^
./tests/service/test_protocol.cpp:316:27: error: code should be clang-formatted [-Wclang-format-violations]
args.threadId = 1;
^

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