Add basic melos support

[Sub6Resources]

Fixes #1133

[codecov[bot]]

Codecov Report

Base: 51.44% // Head: 49.62% // Decreases project coverage by -1.81% :warning:

Coverage data is based on head (cd925de) compared to base (ff059b7). Patch has no changes to coverable lines.

:exclamation: Current head cd925de differs from pull request most recent head e139d7c. Consider uploading reports for the commit e139d7c to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1147 +/- ## ========================================== - Coverage 51.44% 49.62% -1.82% ========================================== Files 17 18 +1 Lines 2587 2702 +115 ========================================== + Hits 1331 1341 +10 - Misses 1256 1361 +105 ``` | [Impacted Files](https://codecov.io/gh/Sub6Resources/flutter_html/pull/1147?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Matthew+Whitaker) | Coverage Δ | | |---|---|---| | [...ackages/flutter\_html\_svg/lib/flutter\_html\_svg.dart](https://codecov.io/gh/Sub6Resources/flutter_html/pull/1147/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Matthew+Whitaker#diff-cGFja2FnZXMvZmx1dHRlcl9odG1sX3N2Zy9saWIvZmx1dHRlcl9odG1sX3N2Zy5kYXJ0) | `8.69% <0.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Matthew+Whitaker). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Matthew+Whitaker)

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[Sub6Resources]

The difference in code coverage is because we now are tracking coverage on all the subpackages.

[Sub6Resources]

Merging now!