Move pending command, adjust CmakeLists.

Took 24 minutes

libcockatrice_protocol/libcockatrice/protocol/CMakeLists.txt

@@ -0,0 +1,32 @@
+# Top-level wrapper for the protobuf library
+
+add_subdirectory(pb)
+
+add_library(libcockatrice_protocol STATIC)
+
+set(SOURCES
+    pending_command.cpp
+)
+
+set(HEADERS
+    pending_command.h
+)
+
+target_sources(libcockatrice_protocol
+    PRIVATE
+    ${SOURCES}
+    ${HEADERS}
+)
+
+add_dependencies(libcockatrice_protocol libcockatrice_protocol_pb)
+
+# Link the actual generated protobuf library
+target_link_libraries(libcockatrice_protocol PUBLIC ${COCKATRICE_QT_MODULES} libcockatrice_protocol_pb)
+
+# Expose include paths
+target_include_directories(
+    libcockatrice_protocol
+    PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}/pb   # generated pb headers
+)