add license headers everywhere

src/bot.ts

src/channelsyncroniser.ts

src/clientfactory.ts

src/config.ts

src/db/connector.ts

src/db/dbdataemoji.ts

src/db/dbdataevent.ts

src/db/dbdatainterface.ts

src/db/postgres.ts

src/db/schema/dbschema.ts

src/db/schema/v1.ts

src/db/schema/v2.ts

src/db/schema/v3.ts

src/db/schema/v4.ts

src/db/schema/v5.ts

src/db/schema/v6.ts

src/db/schema/v7.ts

src/db/sqlite3.ts

src/discordas.ts

src/discordmessageprocessor.ts