feat: implement interval tree

[bsbds]

Please briefly answer these questions:

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)

  Implements a interval tree, which is useful for dynamic interval update&query.

• what changes does this pull request make?

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 96.30836% with 34 lines in your changes are missing coverage. Please review.

Project coverage is 75.10%. Comparing base (f081173) to head (3e8a9b2). Report is 17 commits behind head on master.

Files	Patch %	Lines
crates/utils/src/interval_map/mod.rs	95.41%	28 Missing and 2 partials :warning:
crates/utils/src/interval_map/tests.rs	98.50%	0 Missing and 4 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #656 +/- ## ========================================== + Coverage 75.07% 75.10% +0.02% ========================================== Files 173 175 +2 Lines 25644 26793 +1149 Branches 25644 26793 +1149 ========================================== + Hits 19253 20122 +869 - Misses 5187 5466 +279 - Partials 1204 1205 +1 ```

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[Phoenix500526]

Please squash some intermediate commits.