Extract views to simpler components

[kmcginnes]

Description

Refactors a few views in to simpler components to make the structure easier to understand.

No logic is actually changed. This is just moving some code around.

Validation

• Add a node and expand
• Change selection
• Show legend

Related Issues

• Part of #341
• Part of #339

Check List

• [x] I confirm that my contribution is made under the terms of the Apache 2.0 license.
• [x] I have run pnpm checks to ensure code compiles and meets standards.
• [x] I have run pnpm test to check if all tests are passing.
• [ ] I have covered new added functionality with unit tests if necessary.
• [x] I have added an entry in the Changelog.md.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 187 lines in your changes are missing coverage. Please review.

Project coverage is 14.90%. Comparing base (361c4ba) to head (62eaa77). Report is 23 commits behind head on main.

:exclamation: Current head 62eaa77 differs from pull request most recent head 9d75e97

Please upload reports for the commit 9d75e97 to get more accurate results.

Files	Patch %	Lines
...lorer/src/modules/NodeExpand/NodeExpandContent.tsx	0.00%	134 Missing :warning:
...h-explorer/src/modules/GraphViewer/GraphViewer.tsx	0.00%	53 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #419 +/- ## ========================================== + Coverage 13.97% 14.90% +0.92% ========================================== Files 414 416 +2 Lines 30639 30860 +221 Branches 878 952 +74 ========================================== + Hits 4283 4600 +317 + Misses 26026 25931 -95 + Partials 330 329 -1 ``` | [Flag](https://app.codecov.io/gh/aws/graph-explorer/pull/419/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/aws/graph-explorer/pull/419/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws) | `14.90% <0.00%> (+0.92%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws#carryforward-flags-in-the-pull-request-comment) to find out more.

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