image_sources: Add palette icon sources of new TChemLabel component along with script to build the res file.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@5959 8e941d3f-bd1b-0410-a28a-d453659cc2b4

image_sources/ccr/components/chemtext/images/list.txt

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+tchemlabel.png
+tchemlabel_150.png
+tchemlabel_200.png

image_sources/ccr/components/chemtext/images/make_res.bat

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+..\..\..\..\lazres ..\..\..\..\..\components\chemtext\source\chemtext.res @list.txt

image_sources/ccr/components/chemtext/readme.txt

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+This folder contains the gimp source file for the palette icon of the 
+"TChemLabel" component.
+
+The icons with appended _150 and _200 are magnifited with respect to the
+icons without appended number by factors 150% and 200%, respectively; they are 
+used for screens at higher resolutions.
+
+The icon is drawn by wp. 
+
+License: free, no restrictions