Show progress information for FetchContent

Github is currently extremely slow to load for me for some reason.
Due to that, I first thought that `cmake` is hung up, but tracing
that I realized it's waiting for minutes to download the sources
for tomlplusplus via FetchContent.

This patch enables progress reporting for FetchContent to make it
more obvious what's going on here.

Author: milianw

CMakeLists.txt

@@ -12,6 +12,8 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 add_compile_definitions(OSS_ENABLE)
 
 include(FetchContent)
+set(FETCHCONTENT_QUIET FALSE)
+
 include(ProcessorCount)
 include(cmake/StandardProjectSettings.cmake)
 include(cmake/PreventInSourceBuilds.cmake)
@@ -35,6 +37,7 @@ FetchContent_Declare(
     tomlplusplus
     GIT_REPOSITORY https://github.com/marzer/tomlplusplus.git
     GIT_TAG        4b166b69f28e70a416a1a04a98f365d2aeb90de8 # v3.2.0
+    GIT_PROGRESS   TRUE
 )
 FetchContent_MakeAvailable(tomlplusplus)
 
@@ -43,6 +46,7 @@ FetchContent_Declare(
     glog
     GIT_REPOSITORY https://github.com/google/glog.git
     GIT_TAG        96a2f23dca4cc7180821ca5f32e526314395d26a
+    GIT_PROGRESS   TRUE
 )
 FetchContent_MakeAvailable(glog)
 
@@ -61,6 +65,7 @@ FetchContent_Declare(
   googletest
   GIT_REPOSITORY https://github.com/google/googletest.git
   GIT_TAG        1ed6a8c67a0bd675149ece27bbec0ef1759854cf
+  GIT_PROGRESS   TRUE
 )
 FetchContent_MakeAvailable(googletest)
 
@@ -69,6 +74,7 @@ FetchContent_Declare(
     rocksdb
     GIT_REPOSITORY https://github.com/facebook/rocksdb.git
     GIT_TAG        f32521662acf3352397d438b732144c7813bbbec # v8.5.3
+    GIT_PROGRESS   TRUE
 )
 FetchContent_Populate(rocksdb)
 add_custom_target(librocksdb ALL
@@ -87,6 +93,7 @@ FetchContent_Declare(
     folly
     GIT_REPOSITORY https://github.com/JakeHillion/folly.git
     GIT_TAG        8db54418e3ccdd97619ac8b69bb3702f82bb0f66
+    GIT_PROGRESS   TRUE
 )
 FetchContent_Populate(folly)