Support MS Teams as a first-class notification/alert target

[capaj]

ms teams were requested by a few people, for example here: #130 (comment)

we need to add MSTeamsCommunicationAdapter:

graphql-hive/packages/services/api/src/modules/alerts/providers/adapters/slack.ts

Line 15 in 4bbab6c

export class SlackCommunicationAdapter implements CommunicationAdapter {

[capaj]

I have created an ms teams organization to test this out. If anyone wants to pick this up before end of June, mention me to add you there as admin so that you don't have to go through the nasty organization signup process with ms 365 same as me.