feat(examples): Modernize example data loading with Parquet and YAML configs (#36538)

Co-authored-by: Claude <noreply@anthropic.com>

superset/examples/fcc_new_coder_survey/charts/Relocation_ability.yaml

@@ -0,0 +1,60 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+cache_timeout: null
+certification_details: null
+certified_by: null
+dataset_uuid: d95a2865-53ce-1f82-a53d-8e3c89331469
+description: null
+params:
+  adhoc_filters:
+  - clause: WHERE
+    comparator: '0'
+    expressionType: SIMPLE
+    filterOptionName: filter_yccan09xctb_wjwt23qhknf
+    isExtra: false
+    isNew: false
+    operator: ==
+    sqlExpression: null
+    subject: is_software_dev
+  annotation_layers: []
+  color_scheme: supersetColors
+  datasource: 42__table
+  donut: true
+  granularity_sqla: time_start
+  groupby:
+  - willing_to_relocate
+  innerRadius: 44
+  label_type: key
+  labels_outside: true
+  metric: count
+  number_format: SMART_NUMBER
+  outerRadius: 69
+  queryFields:
+    groupby: groupby
+    metric: metrics
+  row_limit: null
+  show_labels: true
+  show_legend: false
+  slice_id: 1365
+  time_range: No filter
+  url_params: {}
+  viz_type: pie
+query_context: null
+slice_name: ✈️ Relocation ability
+uuid: a6dd2d5a-2cdc-c8ec-f30c-85920f4f8a65
+version: 1.0.0
+viz_type: pie