fix(modules): add missing static/description/index.html for 7 modules

Odoo requires static/description/index.html to exist for all modules
in the addons path. These 7 modules were missing it, causing
FileNotFoundError during module loading.

Author: emjay0921

spp_aggregation/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_aggregation</h1>

spp_api_v2_simulation/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_api_v2_simulation</h1>

spp_dci_demo/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_dci_demo</h1>

spp_metrics_core/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_metrics_core</h1>

spp_metrics_services/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_metrics_services</h1>

spp_statistic/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_statistic</h1>

spp_statistic_studio/static/description/index.html

@@ -0,0 +1 @@
+<h1>spp_statistic_studio</h1>