add guidance page for using verify prototype
add guidance page for using verify prototype

written after consulting the verify team on how they'd like people to contact them about this
samwake/hoddat-cofc-caseworking,OrcaTom/dwp_contentpatterns,gup-dwp/pip-prototype-v2,alphagov/govuk_prototype_kit,nhsbsa/ppc-prototype,dwpdigitaltech/ejs-prototype,OrcaTom/dwp_contentpatterns,tsmorgan/marx,paulpod/invgov,abbott567/govuk_prototype_kit,OrcaTom/dwp_contentpatterns,Demwunz/esif-prototype,davedark/proto-timeline,hannalaakso/accessible-timeout-warning,danblundell/verify-local-patterns,DilwoarH/GDS-Prototype-DM-SavedSearch,kenmaddison-scc/verify-local-patterns,hannalaakso/accessible-timeout-warning,companieshouse/ch-accounts-prototype,benjeffreys/hmcts-idam-proto,paulpod/invgov,dwpdigitaltech/digital-debt,gavinwye/govuk_prototype_kit,tsmorgan/marx,arminio/govuk_prototype_kit,joelanman/govuk_prototype_kit,dwpdigitaltech/hrt-prototype,Demwunz/esif-prototype,quis/notify-public-research-prototype,tsmorgan/marx,chrishanes/pvb_prisoner_proto,samwake/hoddat-cofc-caseworking,dwpdigitaltech/hrt-prototype,davedark/proto-timeline,hannalaakso/accessible-timeout-warning,nhsbsa/ppc-prototype,danblundell/verify-local-patterns,karlparton/my-govuk,Demwunz/esif-prototype,BucksCountyCouncil/verify-local-patterns,karlparton/my-govuk,BucksCountyCouncil/verify-local-patterns,dwpdigitaltech/digital-debt,dwpdigitaltech/ejs-prototype,nhsbsa/ppc-prototype,alphagov/govuk_prototype_kit,joelanman/govuk_prototype_kit,chrishanes/pvb_prisoner_proto,samwake/hoddat-cofc-caseworking,karlparton/my-govuk,danblundell/verify-local-patterns,davedark/proto-timeline,abbott567/govuk_prototype_kit,kenmaddison-scc/verify-local-patterns,arminio/govuk_prototype_kit,benjeffreys/hmcts-idam-proto,gavinwye/govuk_prototype_kit,dwpdigitaltech/ejs-prototype,joelanman/govuk_prototype_kit,DilwoarH/GDS-Prototype-DM-SavedSearch,companieshouse/ch-accounts-prototype,quis/notify-public-research-prototype,dwpdigitaltech/digital-debt,arminio/govuk_prototype_kit,benjeffreys/hmcts-idam-proto,kenmaddison-scc/verify-local-patterns,DilwoarH/GDS-Prototype-DM-SavedSearch,BucksCountyCouncil/verify-local-patterns,gup-dwp/pip-prototype-v2,gup-dwp/pip-prototype-v2,quis/notify-public-research-prototype,abbott567/govuk_prototype_kit,alphagov/govuk_prototype_kit,paulpod/invgov,chrishanes/pvb_prisoner_proto,dwpdigitaltech/hrt-prototype