Reduce number of render threads in foot

Disabling render threads has performance penalty
but more than 1 thread does not seem to help at all

default is to create `nproc` render threads

.config/foot/foot.ini

@@ -1,6 +1,8 @@
 # -*- conf -*-
-
+[main]
 font=Terminus:size=12
+workers=1
+
 include=/usr/share/foot/themes/tango
 
 [colors]
@@ -11,4 +13,10 @@ lines=10000
 
 [url]
 osc8-underline=always
+
+[tweak]
+#render-timer=osd
+#delayed-render-lower=0
+#delayed-render-upper=0
+
 # vim: ft=dosini