pamditherbw: edit page; atktopbm, pamenlarge, pbmreduce, pbmtext, pbmtextps, pbmtoatk, pbmtobbnbg; add pages (#12236)

* pamditherbw: edit page; atktopbm, pamenlarge, pbmreduce, pbmtext, pbmtextps, pbmtoatk, pbmtobbnbg; add pages

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Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

pages/common/pbmtextps.md

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+# pbmtextps
+
+> Render text as a PBM image using PostScript.
+> See also: `pbmtext`.
+> More information: <https://netpbm.sourceforge.net/doc/pbmtextps.html>.
+
+- Render a single line of text as a PBM image:
+
+`pbmtextps "{{Hello World!}}" > {{path/to/output.pbm}}`
+
+- Specify the font and font size:
+
+`pbmtextps -font {{Times-Roman}} -fontsize {{30}}  "{{Hello World!}}" > {{path/to/output.pbm}}`
+
+- Specify the desired left and top margins:
+
+`pbmtextps -leftmargin {{70}} -topmargin {{162}}  "{{Hello World!}}" > {{path/to/output.pbm}}`
+
+- Do not output the rendered text as a PBM image, but a PostScript program that would create this image:
+
+`pbmtextps -dump-ps "{{Hello World!}}" > {{path/to/output.ps}}`