pbx.c: expand fields width of "core show hints"

The current width for "extension" is 20 and "device state id" is 20, which is too small.
The "extension" field contains "ext"@"context", so 20 characters is not enough.
The "device state id" field, for example for Queue pause state contains Queue:"queue_name"_pause_PSJIP/"endpoint", so the 20 characters is not enough.

Increase the width of "extension" field to 30 characters and the width of the "device state id" field to 60 characters.

Resolves: #770

UserNote: The fields width of "core show hints" were increased.
The width of "extension" field to 30 characters and
the width of the "device state id" field to 60 characters.

(cherry picked from commit dcdda4688e)

main/pbx.c

@@ -5242,7 +5242,7 @@ static char *handle_show_hints(struct ast_cli_entry *e, int cmd, struct ast_cli_
 			ast_get_extension_name(hint->exten),
 			ast_get_context_name(ast_get_extension_context(hint->exten)));
 
-		ast_cli(a->fd, "%-20.20s: %-20.20s  State:%-15.15s Presence:%-15.15s Watchers %2d\n",
+		ast_cli(a->fd, "%-30.30s: %-60.60s  State:%-15.15s Presence:%-15.15s Watchers %2d\n",
 			buf,
 			ast_get_extension_app(hint->exten),
 			ast_extension_state2str(hint->laststate),
@@ -5343,7 +5343,7 @@ static char *handle_show_hint(struct ast_cli_entry *e, int cmd, struct ast_cli_a
 			sprintf(buf, "%s@%s",
 				ast_get_extension_name(hint->exten),
 				ast_get_context_name(ast_get_extension_context(hint->exten)));
-			ast_cli(a->fd, "%-20.20s: %-20.20s  State:%-15.15s Presence:%-15.15s Watchers %2d\n",
+			ast_cli(a->fd, "%-30.30s: %-60.60s  State:%-15.15s Presence:%-15.15s Watchers %2d\n",
 				buf,
 				ast_get_extension_app(hint->exten),
 				ast_extension_state2str(hint->laststate),