feat(project): upgrade to angular 10

[raulcrisan]

BREAKING CHANGE: required angular 10

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines: https://github.com/HackedByChinese/ng2-idle/blob/master/CONTRIBUTING.md#pr
• [x] Tests for the changes have been added (for bug fixes / features)
• [x] Docs have been added / updated (for bug fixes / features)

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)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

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

What is the new behavior?

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

[x] Yes
[ ] No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ... Angular 10 will ne required after this PR.

Other information:

[coveralls]

Coverage remained the same at 100.0% when pulling ea853a6430564d6ae3e3807d4d8956f3332de4df on raulcrisan:angular10 into 45013d9c7129891caa475cfc99e0d1b57b5ade1f on moribvndvs:master.

[moribvndvs]

Thanks!

[mramos-dev]

Can this be published to NPM?