feat: Job coordination for fallback share submission

CMakeLists.txt

@@ -23,6 +23,7 @@ add_executable(datum_gateway
 	src/datum_conf.c
 	src/datum_conf_tests.c
 	src/datum_gateway.c
+	src/datum_job_sync.c
 	src/datum_jsonrpc.c
 	src/datum_logger.c
 	src/datum_protocol.c

src/datum_conf.h

@@ -159,7 +159,13 @@ typedef struct {
 	char datum_pool_pubkey[1024];
 	int datum_protocol_global_timeout;
 	uint64_t datum_protocol_global_timeout_ms;
-
+
+	// Job coordination options
+	bool datum_enable_job_coordination;
+	bool datum_share_full_templates;
+	bool datum_allow_direct_failover;
+	char datum_gateway_id[16];
+
 	uint32_t prime_id;
 	unsigned char override_mining_pool_scriptsig[256];
 	int override_mining_pool_scriptsig_len;