docs(readme): deprecation notice

docs(readme): remove broken tags

chore(release): 7.0.0 release notes

docs: Update version numbers from 6.1.0 -> 7.0.0

build(deploy): upgrade to node 18

chore(common): update common version

test(nlu): update tests for hand edits

chore(all): lint copyrights

chore(assistant,nlu): more hand edits

build(actions): update to .net 7.0

fix(all): use correct csproj version

feat(discov2): new aggregation types

fix(nlu): hand edits

fix(assistantv2): final edits

fix(assistantv2): discriminator hand edits