patch 8.0.0813: cannot use a terminal window while the job is running

Problem:    Cannot use Vim commands in a terminal window while the job is
            running.
Solution:   Implement Terminal Normal mode.
diff --git a/src/proto/terminal.pro b/src/proto/terminal.pro
index daa7706..6f5b3ab 100644
--- a/src/proto/terminal.pro
+++ b/src/proto/terminal.pro
@@ -2,11 +2,15 @@
 void ex_terminal(exarg_T *eap);
 void free_terminal(buf_T *buf);
 void write_to_term(buf_T *buffer, char_u *msg, channel_T *channel);
+int term_in_terminal_mode(void);
+void term_leave_terminal_mode(void);
+int term_use_loop(void);
 int terminal_loop(void);
 void term_job_ended(job_T *job);
 void term_channel_closed(channel_T *ch);
 int term_update_window(win_T *wp);
 int term_is_finished(buf_T *buf);
+int term_show_buffer(buf_T *buf);
 void term_change_in_curbuf(void);
 int term_get_attr(buf_T *buf, linenr_T lnum, int col);
 char_u *term_get_status_text(term_T *term);
@@ -16,8 +20,8 @@
 void f_term_getline(typval_T *argvars, typval_T *rettv);
 void f_term_getsize(typval_T *argvars, typval_T *rettv);
 void f_term_list(typval_T *argvars, typval_T *rettv);
-void f_term_start(typval_T *argvars, typval_T *rettv);
 void f_term_scrape(typval_T *argvars, typval_T *rettv);
 void f_term_sendkeys(typval_T *argvars, typval_T *rettv);
+void f_term_start(typval_T *argvars, typval_T *rettv);
 void f_term_wait(typval_T *argvars, typval_T *rettv);
 /* vim: set ft=c : */