core: Move speedscope into a trace app. Isolate all the things.

GNUmakefile

@@ -959,8 +959,7 @@ PACKAGE_DIRS := \
 	core \
 	deps/codemirror \
 	deps/prettier \
-	deps/lit \
-	deps/speedscope
+	deps/lit
 
 RAW_FILES := $(sort $(filter-out apps/blog% apps/issues% apps/welcome% apps/journal% %.map, $(shell find $(PACKAGE_DIRS) -type f -not -name '.*')))
 
@@ -1260,7 +1259,6 @@ tarball: ## Build an all-inclusive source tarball (.tar.xz).
 		--exclude=deps/libsodium/test \
 		--exclude=deps/libuv/docs \
 		--exclude=deps/libuv/test \
-		--exclude=deps/speedscope/*.map \
 		--exclude=deps/sqlite/shell.c \
 		--exclude=deps/zlib/contrib/vstudio \
 		--exclude=deps/zlib/doc \