feat: initial uploads and single study space view

Co-Authored-By: Alex Ling <al443@ic.ac.uk>

src/lib/components/Button.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+    import type { Snippet } from "svelte";
+
+    interface Props {
+        onclick?: (event: MouseEvent) => void;
+        disabled?: boolean;
+        type?: "button" | "submit" | "reset";
+        children?: Snippet;
+    }
+    const { children, ...rest }: Props = $props();
+</script>
+
+<button {...rest}>
+    {@render children?.()}
+</button>
+
+<style>
+    button {
+        padding: 0.5rem 1rem;
+        border-radius: 0.5rem;
+        background: linear-gradient(-83deg, #3fb095, #49bd85);
+        box-shadow: 0rem 0rem 0.5rem #182125;
+        color: #eaffeb;
+        border: none;
+        cursor: pointer;
+    }
+    button:focus {
+        outline: 2px solid #007bff;
+    }
+</style>