Add hashCode implementation to HttpMessage
Add hashCode implementation to HttpMessage

Since the method equals(Object) is overridden, hashCode() should as
well.

Ali-Razmjoo/zaproxy,zapbot/zaproxy,psiinon/zaproxy,lightsey/zaproxy,kingthorin/zaproxy,lightsey/zaproxy,NVolcz/zaproxy,Ali-Razmjoo/zaproxy,mustafa421/zaproxy,gmaran23/zaproxy,zapbot/zaproxy,gmaran23/zaproxy,JordanGS/zaproxy,rajiv65/zaproxy,psiinon/zaproxy,thc202/zaproxy,psiinon/zaproxy,thc202/zaproxy,NVolcz/zaproxy,zaproxy/zaproxy,zapbot/zaproxy,Ali-Razmjoo/zaproxy,rajiv65/zaproxy,NVolcz/zaproxy,psiinon/zaproxy,thc202/zaproxy,Harinus/zaproxy,zapbot/zaproxy,Harinus/zaproxy,lightsey/zaproxy,kingthorin/zaproxy,meitar/zaproxy,meitar/zaproxy,Ali-Razmjoo/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,NVolcz/zaproxy,kingthorin/zaproxy,gmaran23/zaproxy,gsavastano/zaproxy,zaproxy/zaproxy,mustafa421/zaproxy,psiinon/zaproxy,thc202/zaproxy,kingthorin/zaproxy,rajiv65/zaproxy,gsavastano/zaproxy,gmaran23/zaproxy,JordanGS/zaproxy,JordanGS/zaproxy,meitar/zaproxy,zapbot/zaproxy,JordanGS/zaproxy,Harinus/zaproxy,meitar/zaproxy,lightsey/zaproxy,psiinon/zaproxy,Ali-Razmjoo/zaproxy,rajiv65/zaproxy,kingthorin/zaproxy,mustafa421/zaproxy,gsavastano/zaproxy,zapbot/zaproxy,Harinus/zaproxy,lightsey/zaproxy,lightsey/zaproxy,gmaran23/zaproxy,kingthorin/zaproxy,rajiv65/zaproxy,gsavastano/zaproxy,meitar/zaproxy,zaproxy/zaproxy,Harinus/zaproxy,gsavastano/zaproxy,NVolcz/zaproxy,meitar/zaproxy,thc202/zaproxy,Ali-Razmjoo/zaproxy,zaproxy/zaproxy,zaproxy/zaproxy,meitar/zaproxy,Harinus/zaproxy,mustafa421/zaproxy,gmaran23/zaproxy,JordanGS/zaproxy,mustafa421/zaproxy,gmaran23/zaproxy,thc202/zaproxy,zaproxy/zaproxy,Harinus/zaproxy,mustafa421/zaproxy,gsavastano/zaproxy,JordanGS/zaproxy,zapbot/zaproxy,lightsey/zaproxy,JordanGS/zaproxy,rajiv65/zaproxy,gsavastano/zaproxy,meitar/zaproxy,psiinon/zaproxy,thc202/zaproxy,NVolcz/zaproxy,NVolcz/zaproxy,Ali-Razmjoo/zaproxy,mustafa421/zaproxy,rajiv65/zaproxy