feat: Add Execution Response Section component and related composables for file handling and error management

- Implemented ExecutionResponseSection.vue to display execution results and handle file downloads.
- Created useBase64Decoder.js for base64 decoding utilities.
- Developed useChatToggle.js for managing chat panel state.
- Added useErrorHandler.js for standardized error handling with toast notifications.
- Introduced useFileDownload.js for various file download operations.
- Created useFileProcessing.js for processing files, including zip extraction and content display.
- Implemented usePolling.js for polling backend API for execution status.
- Added useScenarioRating.js for managing scenario execution ratings.
- Developed CSV export utilities in csvExport.js for generating and downloading CSV files.
- Created formDataProcessor.js for processing and validating multiselect form data.
- Implemented inputComponents.js for mapping input types to PrimeVue components.
- Enhanced ScenarioExecHistory.vue to integrate new components and functionalities.

src/components/ExecutionTimer.vue

@@ -64,13 +64,13 @@ defineExpose({
 
 <template>
     <div v-if="isLoading" class="flex flex-col items-center">
-        <div class="flex justify-center mt-4">
-            <jellyfish-loader :loading="isLoading" scale="1" color="#A100FF" />
-        </div>
         <div v-if="message && message.includes('/')">
             <span>{{ message }}</span>
         </div>
         <div v-else>Starting execution...</div>
+        <div class="flex justify-center mt-4">
+            <jellyfish-loader :loading="isLoading" scale="1" color="#A100FF" />
+        </div>
         <div class="flex justify-center" style="margin-bottom: 30px">
             <p>Time elapsed:&nbsp;</p>
             <div class="timer">{{ elapsedTime }}</div>