[GraphQL] Make TypeGraphQL a dev dep

[LoicPoullain]

Issue

Version 1.3.1 added type-graphql by mistake as dependency of the @foal/graphql package.

Solution and steps

• Make it a dev dependency.

Checklist

• Add/update/check docs (code comments and docs/ folder).
• Add/update/check tests.
• Update/check the cli generators.

[codecov]

Codecov Report

Merging #608 into v1-4-0 will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           v1-4-0     #608      +/-   ##
==========================================
- Coverage   99.63%   99.62%   -0.01%     
==========================================
  Files          90       90              
  Lines        1632     1589      -43     
  Branches      364      335      -29     
==========================================
- Hits         1626     1583      -43     
  Misses          6        6

Impacted Files	Coverage Δ
packages/core/src/common/utils/controller.util.ts	100% <0%> (ø)	⬆️
...ages/core/src/common/utils/verify-password.util.ts	100% <0%> (ø)	⬆️
packages/core/src/sessions/token-optional.hook.ts	100% <0%> (ø)	⬆️
packages/core/src/sessions/token-required.hook.ts	100% <0%> (ø)	⬆️
packages/core/src/sessions/set-session-cookie.ts	100% <0%> (ø)	⬆️
...api/metadata-getters/get-api-complete-operation.ts	100% <0%> (ø)	⬆️
packages/core/src/express/create-app.ts	100% <0%> (ø)	⬆️
packages/core/src/express/send-response.ts	100% <0%> (ø)	⬆️
...ackages/core/src/sessions/remove-session-cookie.ts	100% <0%> (ø)	⬆️
packages/core/src/core/routes/utils.ts	100% <0%> (ø)	⬆️
... and 5 more

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