Missing copyright information

As per point 6 and point 11 stated in https://rajeeshknambiar.wordpress.com/2019/11/25/public-statement-by-rachana-institute-of-typography-on-the-copyright-credit-issue-of-smc-and-rit-fonts/

Reproducing the relevant parts here. "In 2015, Santhosh split the comprehensive lookup rules from the Fontforge SFD file of Rachana into a separate feature file, but the copyright statements were not preserved [4]. It is our opinion that removing copyright statements is violation of copyright act (hence a crime) and immoral in the free software world. This is also the root cause for missing copyright in the OpenType lookup rules and build script, of the fonts in question."

"Preserve the copyright of the original authors of the ‘lookup rules’ and Naming convention (notation for Glyphs) in all these fonts. The copyright and license statement should read:

“Copyright: Digitized data copyright (c) 2004–2005 Rachana Akshara Vedi (Chitrajakumar R, Hussain KH, Gangadharan N, Vijayakumaran Nair, Subash Kuraiakose), (c) 2006–2016 Hussain KH, Suresh P, Santhosh Thottingal, Rajeesh K Nambiar, Swathanthra Malayalam Computing (http://smc.org.in). This file is licensed under OFL  1.1."

This needs to be investigated and fixed. This exercise should also be conducted for other fonts that we have.