termcap: add missing capabilities to the xterm-ghostty entry

The entry was imported from the termcap source that Ghostty generates
with infotocap during its build.  To fit within 1023 bytes, the
conversion dropped a number of capabilities, most notably all color
support, so termcap consumers such as ls -G and ncurses applications
treated Ghostty as a monochrome terminal.

Split the entry into xterm-ghostty and a ghostty+common fragment, and
restore the following from Ghostty's terminfo definition:

 - colors: Co, pa, AF, AB, op, oc, ut, AX
 - keys: End, keypad Enter, F10-F12, back tab, mouse prefix
 - attributes: italics (ZH/ZR), invisible (mk), acsc map (ac)
 - misc: cb, ch, cv, SA/RA, r1, bs, NP, 5i

AF and AB use the plain 256-color form, like xterm-256color, because
termcap cannot express the conditional used by the terminfo entry.

Fixes:		804f961c5c ("share/termcap: add xterm-ghostty entry")
MFC after:	1 week

share/termcap/termcap

@@ -4824,7 +4824,15 @@ alacritty+common|base fragment for alacritty:\
 
 # From Tim Culverhouse <[email protected]>
 xterm-ghostty|ghostty|Ghostty:\
-	:am:hs:km:mi:ms:xn:\
+	:ut:AX:NP:5i:\
+	:Co#256:pa#32767:\
+	:AB=\E[48;5;%dm:AF=\E[38;5;%dm:\
+	:ac=++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~:\
+	:oc=\E]104\007:op=\E[39;49m:r1=\E]\E\\\Ec:\
+	:tc=ghostty+common:
+
+ghostty+common|base fragment for ghostty:\
+	:am:bs:hs:km:mi:ms:xn:\
 	:co#80:it#8:li#24:\
 	:AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:DO=\E[%dB:IC=\E[%d@:\
 	:LE=\E[%dD:RI=\E[%dC:SF=\E[%dS:SR=\E[%dT:UP=\E[%dA:\
@@ -4839,7 +4847,10 @@ xterm-ghostty|ghostty|Ghostty:\
 	:mh=\E[2m:mr=\E[7m:nd=\E[C:rc=\E8:sc=\E7:se=\E[27m:sf=\n:\
 	:so=\E[7m:sr=\EM:st=\EH:ta=^I:te=\E[?1049l:ti=\E[?1049h:\
 	:ts=\E]2;:ue=\E[24m:up=\E[A:us=\E[4m:vb=\E[?5h\E[?5l:\
-	:ve=\E[?12l\E[?25h:vi=\E[?25l:vs=\E[?12;25h:
+	:ve=\E[?12l\E[?25h:vi=\E[?25l:vs=\E[?12;25h:\
+	:@7=\EOF:@8=\EOM:F1=\E[23~:F2=\E[24~:Km=\E[<:RA=\E[?7l:\
+	:SA=\E[?7h:ZH=\E[3m:ZR=\E[23m:cb=\E[1K:ch=\E[%i%dG:\
+	:cv=\E[%i%dd:k;=\E[21~:kB=\E[Z:mk=\E[8m:
 
 #
 # END OF TERMCAP