feat(map): implement mapsize in sandbox page #closes2102

[kaminderpal]

Description

Implement map size width and height input fields on sandbox for rendering different size of maps.

Fixes #2102

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

Add the URL for your deploy!
https://kaminderpal.github.io/geoview/sandbox.html

Checklist:

• I have build (rush build) and deploy (rush host) my PR
• I have connected the issues(s) to this PR
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have created new issue(s) related to the outcome of this PR is needed
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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This change is 

[jolevesq]

Reviewed 2 of 3 files at r1, all commit messages.
Reviewable status: 2 of 3 files reviewed, 1 unresolved discussion (waiting on @kaminderpal)

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packages/geoview-core/public/templates/sandbox.html line 234 at r1 (raw file):

      newDiv.setAttributeNode(a);

      let mapWidth = document.getElementById("mapWidth")?.value;

use single quote here and all other places

[kaminderpal]

Reviewable status: 1 of 3 files reviewed, 1 unresolved discussion (waiting on @jolevesq)

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packages/geoview-core/public/templates/sandbox.html line 234 at r1 (raw file):

Previously, jolevesq (Johann Levesque) wrote…

use single quote here and all other places

Done.