Add annotations to MatchGroupUtil (#3322)

* Fix module that gest importet

* fix folder name

* Add annotations to MatchGroupUtil

* players can have extradata

* Update match_group_util.lua

* Update match_group_util.lua

* missing timestamp field anno; shut up warnings

* match has bestof

* as per review

* Update components/match2/commons/match_group_util.lua

Co-authored-by: Rikard Blixt <[email protected]>

* Update components/match2/commons/match_group_util.lua

Co-authored-by: Rikard Blixt <[email protected]>

* kick now redundant

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Co-authored-by: Rikard Blixt <[email protected]>