added splash screen for loads, adjusted accessibility

[Mathenda]

Pull Request

Description:

[Provide a concise summary of your changes and why they are necessary.]

Related Issues:

[Reference any related issues or documents.]

Type of Change:

• [ ] Bug Fix
• [ ] New Feature
• [ ] Enhancement
• [ ] Refactoring
• [ ] Documentation Update

Checklist:

• [ ] My code follows the coding standards of this project.
• [ ] I have performed a self-review of my code.
• [ ] I have added/updated relevant documentation.
• [ ] My changes generate no new warnings or errors.
• [ ] I have tested my changes.

Reviewers:

• @reviewer1
• @reviewer2

Testing Instructions:

[Provide clear and concise instructions on how to test your changes.]

Screenshots (if applicable):

[Add screenshots to help reviewers understand the changes visually.]

Additional Notes:

[Any additional information that may be helpful for reviewers.]

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 40.18%. Comparing base (f6bdaf0) to head (d7662d1). Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/app/app.component.html	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #204 +/- ## ========================================== + Coverage 40.00% 40.18% +0.18% ========================================== Files 85 86 +1 Lines 315 316 +1 Branches 16 16 ========================================== + Hits 126 127 +1 Misses 189 189 ``` | [Flag](https://app.codecov.io/gh/COS301-SE-2024/Events-System/pull/204/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=COS301-SE-2024) | Coverage Δ | | |---|---|---| | [](https://app.codecov.io/gh/COS301-SE-2024/Events-System/pull/204/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=COS301-SE-2024) | `40.18% <66.66%> (+0.18%)` | :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=COS301-SE-2024#carryforward-flags-in-the-pull-request-comment) to find out more.

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