updated tests and doc

Created the outline of the ProfileView

src/components/__tests__/CurrentSavingChallenge.spec.js

+import { mount } from '@vue/test-utils'
+import { describe, it, expect } from 'vitest'
+import CurrentSavingChallenge from '@/components/CurrentSavingChallenge.vue'
+
+describe('Current Saving Challenge: Component testing', () => {
+    it('renders the component', () => {
+        const wrapper = mount(CurrentSavingChallenge)
+        expect(wrapper.exists()).toBe(true)
+    })
+})
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