Adding draft for ctags generation documentation.

creating-ctags.md

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+# Creating library ctags
+I have created following script for creating ctags, for different libraries.
+You probably have a folder with the clones of all libraries.
+You simply have the script run in that folder.
+
+
+# Creating pikeos ctags
+Well you will probably look up the seven parameter
+of syscall xyz at any time.