Add rounded-vertical-sides variants for Capital/Lower W, for ss10.

[jmcwilliams403]

This could also be added to #2146 because flat-top variants for this shape also exist.
However, as far as the current stylistic sets go, Envy Code R only uses this style.

After this I'm probably done adding variants for the time being. Anything else I can think of is either frivolous or outside of my current abilities.

ABC.DEF.GHI.JKL.MNO.PQRS.TUV.WXYZ
abc.def.ghi.jkl.mno.pqrs.tuv.wxyz
!iIlL17|¦ ¢coO08BDQ $5SZ2zs ∂96µm
float il1[]={1-2/3.4,5+6=7/8%90};
1234567890 ,._-+= >< «¯-¬_» ~–÷+×
{*}[]()<>`+-=$/#_%^@\&|~?'" !,.;:
G6Qg9q¶ Þẞðþſß ΓΔΛαβγδιλμνξπτυφχψ
ЖЗКНРУЭЯавжзклмнруфчьыэя <= != ==

ss10 sans upright:

ss10 sans italic:

ss10 slab upright:

ss10 slab italic:

all W variants:
W𝖶Ⱳ

all w variants:
w𝗐ⱳ

[be5invis]

How many other variants are there to be added for for making SSes look "accurate"?
I hope this is the last.