CCodegen: add Matrix tests
CCodegen: add Matrix tests

grevutiu-gabriel/sympy,maniteja123/sympy,oliverlee/sympy,jerli/sympy,farhaanbukhsh/sympy,jbbskinny/sympy,Davidjohnwilson/sympy,debugger22/sympy,liangjiaxing/sympy,liangjiaxing/sympy,Shaswat27/sympy,asm666/sympy,Sumith1896/sympy,bukzor/sympy,VaibhavAgarwalVA/sympy,iamutkarshtiwari/sympy,Arafatk/sympy,ChristinaZografou/sympy,yukoba/sympy,toolforger/sympy,shipci/sympy,postvakje/sympy,vipulroxx/sympy,dqnykamp/sympy,Gadal/sympy,maniteja123/sympy,lindsayad/sympy,pandeyadarsh/sympy,shikil/sympy,dqnykamp/sympy,Vishluck/sympy,drufat/sympy,Designist/sympy,VaibhavAgarwalVA/sympy,Shaswat27/sympy,kumarkrishna/sympy,pbrady/sympy,shikil/sympy,chaffra/sympy,sahilshekhawat/sympy,Davidjohnwilson/sympy,jamesblunt/sympy,jaimahajan1997/sympy,rahuldan/sympy,garvitr/sympy,iamutkarshtiwari/sympy,mafiya69/sympy,Arafatk/sympy,sampadsaha5/sympy,Titan-C/sympy,yashsharan/sympy,atsao72/sympy,maniteja123/sympy,jbbskinny/sympy,saurabhjn76/sympy,souravsingh/sympy,abhiii5459/sympy,AunShiLord/sympy,meghana1995/sympy,sahilshekhawat/sympy,sahmed95/sympy,dqnykamp/sympy,beni55/sympy,liangjiaxing/sympy,pbrady/sympy,bukzor/sympy,diofant/diofant,kumarkrishna/sympy,saurabhjn76/sympy,Gadal/sympy,MechCoder/sympy,postvakje/sympy,hargup/sympy,MechCoder/sympy,Titan-C/sympy,Arafatk/sympy,asm666/sympy,cccfran/sympy,aktech/sympy,Davidjohnwilson/sympy,ahhda/sympy,chaffra/sympy,moble/sympy,garvitr/sympy,MechCoder/sympy,sunny94/temp,Gadal/sympy,kaushik94/sympy,sahmed95/sympy,kevalds51/sympy,Curious72/sympy,drufat/sympy,emon10005/sympy,AkademieOlympia/sympy,debugger22/sympy,madan96/sympy,sampadsaha5/sympy,oliverlee/sympy,wanglongqi/sympy,AunShiLord/sympy,jamesblunt/sympy,kumarkrishna/sympy,kevalds51/sympy,AunShiLord/sympy,kaichogami/sympy,jaimahajan1997/sympy,bukzor/sympy,emon10005/sympy,farhaanbukhsh/sympy,cswiercz/sympy,abloomston/sympy,hargup/sympy,sahilshekhawat/sympy,cswiercz/sympy,rahuldan/sympy,pandeyadarsh/sympy,mafiya69/sympy,toolforger/sympy,kaichogami/sympy,wanglongqi/sympy,ChristinaZografou/sympy,ga7g08/sympy,mcdaniel67/sympy,oliverlee/sympy,sampadsaha5/sympy,jbbskinny/sympy,saurabhjn76/sympy,ChristinaZografou/sympy,abloomston/sympy,souravsingh/sympy,farhaanbukhsh/sympy,hargup/sympy,Designist/sympy,rahuldan/sympy,atreyv/sympy,Designist/sympy,abhiii5459/sympy,meghana1995/sympy,aktech/sympy,Curious72/sympy,lindsayad/sympy,sunny94/temp,pandeyadarsh/sympy,mcdaniel67/sympy,debugger22/sympy,MridulS/sympy,pbrady/sympy,Vishluck/sympy,skidzo/sympy,kaushik94/sympy,beni55/sympy,vipulroxx/sympy,mcdaniel67/sympy,Titan-C/sympy,VaibhavAgarwalVA/sympy,toolforger/sympy,moble/sympy,madan96/sympy,kaushik94/sympy,grevutiu-gabriel/sympy,beni55/sympy,meghana1995/sympy,cswiercz/sympy,ga7g08/sympy,aktech/sympy,yashsharan/sympy,Vishluck/sympy,jerli/sympy,asm666/sympy,Mitchkoens/sympy,Mitchkoens/sympy,wanglongqi/sympy,postvakje/sympy,garvitr/sympy,wyom/sympy,wyom/sympy,ahhda/sympy,mafiya69/sympy,vipulroxx/sympy,souravsingh/sympy,MridulS/sympy,grevutiu-gabriel/sympy,shipci/sympy,Shaswat27/sympy,drufat/sympy,atreyv/sympy,lindsayad/sympy,skirpichev/omg,jerli/sympy,yukoba/sympy,shikil/sympy,shipci/sympy,emon10005/sympy,skidzo/sympy,cccfran/sympy,iamutkarshtiwari/sympy,sunny94/temp,Sumith1896/sympy,abhiii5459/sympy,skidzo/sympy,AkademieOlympia/sympy,wyom/sympy,abloomston/sympy,cccfran/sympy,MridulS/sympy,moble/sympy,yashsharan/sympy,atsao72/sympy,kevalds51/sympy,Mitchkoens/sympy,madan96/sympy,Curious72/sympy,ga7g08/sympy,kaichogami/sympy,jamesblunt/sympy,ahhda/sympy,atreyv/sympy,jaimahajan1997/sympy,chaffra/sympy,Sumith1896/sympy,AkademieOlympia/sympy,atsao72/sympy,yukoba/sympy,sahmed95/sympy