feat: alow getRoles to be async

[lucasdidur]

To create a new Service Autenticator for firebase and get roles directly from database, getRoles functions need to be async

async getRoles(req: express.Request) {
    let user = await getRepository(User).findById(req.user as string);
    return [user.userType.toString()];
}

[codecov[bot]]

Codecov Report

Merging #125 into master will increase coverage by <.01%. The diff coverage is 88.88%.

@@            Coverage Diff             @@
##           master     #125      +/-   ##
==========================================
+ Coverage   94.41%   94.41%   +<.01%     
==========================================
  Files          14       14              
  Lines        1128     1129       +1     
  Branches      204      204              
==========================================
+ Hits         1065     1066       +1     
  Misses         63       63

Impacted Files	Coverage Δ
src/server/model/server-types.ts	100% <ø> (ø)	:arrow_up:
src/authenticator/passport.ts	100% <100%> (ø)	:arrow_up:
src/server/server-container.ts	87.86% <87.5%> (+0.03%)	:arrow_up:

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