Resolve Angular Ivy deep link warning

[SamuelMS]

What kind of change does this PR introduce? (check one with "x")

• [ ] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [x] Build related changes
• [ ] CI related changes
• [ ] Other... Please describe:

What is the current behavior? (You can also link to an open issue here)

Warning during compilation with Angular Ivy:

Warning: Entry point '@swimlane/ngx-dnd' contains deep imports into '/Users/samuelms/Documents/GitHub/datamonkey-frontend/node_modules/@angular/compiler/src/core'. This is probably not a problem, but may cause the compilation of entry points to be out of order.

See #160.

What is the new behavior?

No warning during compilation.

Does this PR introduce a breaking change? (check one with "x")

• [ ] Yes
• [x] No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

@Hypercubed Very minor change to imports to resolve a warning during Angular Ivy compilation.

[SamuelMS]

@Hypercubed Hey, just want to make sure this didn't slip past your radar. Let me know if anything needs to change.

[Hypercubed]

@SamuelMS Wasn't this fixed in the latest patch of Angular?

[SamuelMS]

@Hypercubed I don't think so – unless you mean Angular 10, which is still in RC. We're running 9.1.9 and still seeing this.

[Hypercubed]

@SamuelMS Please try v8.1.2

[SamuelMS]

LGTM, thanks.