Draft: Feature/improve builds through conan

Use conan cache to access the binaries of the dependencies Fix some other minor issues.

utils/ci/conan/recipe/FMILibrary/all/patches/fmi-library-2.0.3-fixes.patch

+diff --git a/src/Import/src/FMI1/fmi1_import_capi.c b/src/Import/src/FMI1/fmi1_import_capi.c
+index 842c998..eeff2b5 100644
+--- a/src/Import/src/FMI1/fmi1_import_capi.c
++++ b/src/Import/src/FMI1/fmi1_import_capi.c
+@@ -67,18 +67,8 @@ jm_status_enu_t fmi1_import_create_dllfmu(fmi1_import_t* fmu, fmi1_callback_func
+ 		return jm_status_error;
+ 	}
+ 
+-	if(jm_portability_set_current_working_directory(dllDirPath) != jm_status_success) {
+-		jm_log_fatal(fmu->callbacks, module, "Could not change to the DLL directory %s", dllDirPath);
+-		if(ENOENT == errno)
+-			jm_log_fatal(fmu->callbacks, module, "The FMU contains no binary for this platform.");
+-		else
+-			jm_log_fatal(fmu->callbacks, module, "System error: %s", strerror(errno));
+-	}
+-	else {
+ 	/* Allocate memory for the C-API struct */
+ 	fmu -> capi = fmi1_capi_create_dllfmu(fmu->callbacks, dllFileName, modelIdentifier, callBackFunctions, standard);
+-	}
+-
+ 
+ 	/* Load the DLL handle */
+ 	if (fmu -> capi) {
+diff --git a/src/Import/src/FMI2/fmi2_import_capi.c b/src/Import/src/FMI2/fmi2_import_capi.c
+index e794775..ffca14d 100644
+--- a/src/Import/src/FMI2/fmi2_import_capi.c
++++ b/src/Import/src/FMI2/fmi2_import_capi.c
+@@ -88,18 +88,8 @@ jm_status_enu_t fmi2_import_create_dllfmu(fmi2_import_t* fmu, fmi2_fmu_kind_enu_
+ 		callBackFunctions = &defaultCallbacks;
+ 	}
+ 
+-	if(jm_portability_set_current_working_directory(dllDirPath) != jm_status_success) {
+-		jm_log_fatal(fmu->callbacks, module, "Could not change to the DLL directory %s", dllDirPath);
+-		if(ENOENT == errno)
+-			jm_log_fatal(fmu->callbacks, module, "The FMU contains no binary for this platform.");
+-		else
+-			jm_log_fatal(fmu->callbacks, module, "System error: %s", strerror(errno));
+-	}
+-	else {
+ 	/* Allocate memory for the C-API struct */
+ 	fmu -> capi = fmi2_capi_create_dllfmu(fmu->callbacks, dllFileName, modelIdentifier, callBackFunctions, fmuKind);
+-	}
+-
+ 
+ 	/* Load the DLL handle */
+ 	if (fmu -> capi) {
+diff --git a/src/Util/include/JM/jm_portability.h b/src/Util/include/JM/jm_portability.h
+index 82e472a..605dff9 100644
+--- a/src/Util/include/JM/jm_portability.h
++++ b/src/Util/include/JM/jm_portability.h
+@@ -65,6 +65,7 @@ jm_status_enu_t jm_portability_get_current_working_directory(char* buffer, size_
+ jm_status_enu_t jm_portability_set_current_working_directory(const char* cwd);
+ 
+ /** \brief Get system-wide temporary directory */
++FMILIB_EXPORT
+ const char* jm_get_system_temp_dir();
+ 
+ /**
+@@ -118,6 +119,7 @@ jm_status_enu_t jm_mkdir(jm_callbacks* cb, const char* dir);
+ /**
+ \brief Remove directory and all it contents.
+ */
++FMILIB_EXPORT
+ jm_status_enu_t jm_rmdir(jm_callbacks* cb, const char* dir);
+ 
+ /**