[FL-1555] Cli: update motd (#584)

* Cli: update motd
* Cli: autocomplete and cursor.
* Cli: one line history.
* Cli: minor cleanup, remove double flush, remove prompt on empty autocomplete

applications/cli/cli_i.h

@@ -7,6 +7,7 @@
 
 #include <m-dict.h>
 #include <m-bptree.h>
+#include <m-array.h>
 
 #define CLI_LINE_SIZE_MAX
 #define CLI_COMMANDS_TREE_RANK 4
@@ -24,15 +25,23 @@ BPTREE_DEF2(
     CliCommand,
     M_POD_OPLIST)
 
+#define M_OPL_CliCommandTree_t() BPTREE_OPLIST(CliCommandTree, M_POD_OPLIST)
+
 struct Cli {
     CliCommandTree_t commands;
     osMutexId_t mutex;
+    string_t last_line;
     string_t line;
+
+    size_t cursor_position;
 };
 
 Cli* cli_alloc();
+
 void cli_free(Cli* cli);
-void cli_reset_state(Cli* cli);
-void cli_print_version(const Version* version);
+
+void cli_reset(Cli* cli);
+
 void cli_putc(char c);
+
 void cli_stdout_callback(void* _cookie, const char* data, size_t size);