feat: mleader entity and styled text builder utility

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.03 :tada:

Comparison is base (412acfb) 99.47% compared to head (866a238) 99.50%.

:exclamation: Current head 866a238 differs from pull request most recent head e7b9eb8. Consider uploading reports for the commit e7b9eb8 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## next #113 +/- ## ========================================== + Coverage 99.47% 99.50% +0.03% ========================================== Files 70 73 +3 Lines 3446 3666 +220 Branches 369 396 +27 ========================================== + Hits 3428 3648 +220 Misses 18 18 ``` | [Impacted Files](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs) | Coverage Δ | | |---|---|---| | [examples/index.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-ZXhhbXBsZXMvaW5kZXgudHM=) | `100.00% <100.00%> (ø)` | | | [examples/mleader.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-ZXhhbXBsZXMvbWxlYWRlci50cw==) | `100.00% <100.00%> (ø)` | | | [src/entities/index.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-c3JjL2VudGl0aWVzL2luZGV4LnRz) | `100.00% <100.00%> (ø)` | | | [src/entities/manager.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-c3JjL2VudGl0aWVzL21hbmFnZXIudHM=) | `100.00% <100.00%> (ø)` | | | [src/entities/mleader.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-c3JjL2VudGl0aWVzL21sZWFkZXIudHM=) | `100.00% <100.00%> (ø)` | | | [src/utils/index.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-c3JjL3V0aWxzL2luZGV4LnRz) | `100.00% <100.00%> (ø)` | | | [src/utils/text.ts](https://app.codecov.io/gh/dxfjs/writer/pull/113?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dxfjs#diff-c3JjL3V0aWxzL3RleHQudHM=) | `100.00% <100.00%> (ø)` | |

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.