Added size-sort options to scripts/code.py

Now with -s/--sort and -S/--reverse-sort for sorting the functions by
size.

You may wonder why add reverse-sort, since its utility doesn't seem
worth the cost to implement (these are just helper scripts after all),
the reason is that reverse-sort is quite useful on the command-line,
where scrollback may be truncated, and you only care about the larger
entries.

Outside of the command-line, normal sort is prefered.

Fortunately the difference is just the sign in the sort key.

Note this conflicts with the short --summary flag, so that has been
removed.

.github/workflows/test.yml

@@ -229,7 +229,7 @@ jobs:
                 | select(.context == env.CONTEXT).description
                 | capture("Code size is (?<result>[0-9]+)").result' \
               || echo 0)"
-            export DESCRIPTION="$(./scripts/code.py -u $f -s | awk '
+            export DESCRIPTION="$(./scripts/code.py -u $f --summary | awk '
               NR==2 {printf "Code size is %d B",$2}
               NR==2 && ENVIRON["PREV"]+0 != 0 {
                 printf " (%+.1f%%)",100*($2-ENVIRON["PREV"])/ENVIRON["PREV"]}')"
@@ -427,7 +427,7 @@ jobs:
               | capture("Coverage is (?<result>[0-9\\.]+)").result' \
             || echo 0)"
           export DESCRIPTION="$(
-            ./scripts/coverage.py -u results/coverage.csv -s | awk -F '[ /%]+' '
+            ./scripts/coverage.py -u results/coverage.csv --summary | awk -F '[ /%]+' '
               NR==2 {printf "Coverage is %.1f%% of %d lines",$4,$3}
               NR==2 && ENVIRON["PREV"]+0 != 0 {
                 printf " (%+.1f%%)",$4-ENVIRON["PREV"]}')"