fix: allow charts to query data in other schemas

[davidruvolo51]

What are the main changes you did:

In a previous PR, a new set of components were introduced to establish a connection between a chart and a table in a schema. However, this limited users to a specific schema making it difficult to build visualisations where data is stored in different schemas. This PR adds the parameter schema to all emx visualisation components allowing developers to pull data from a known schemas.

how to test:

Note: this PR adds the functionality to connect to schemas/tables. The PR referenced below will provide an example. A code review is needed here.

todo:

• [ ] updated docs in case of new feature
• [ ] added/updated tests
• [ ] added/updated testplan to include a test for this fix, including ref to bug using # notation

[davidruvolo51]

This branch will be merged with PR #3826

[sonarcloud[bot]]

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