Refactor event and session column names to camelCase

- Updated test cases to reflect new column names (eve_MAC -> eveMac, eve_DateTime -> eveDateTime, etc.) across various test files.
- Modified SQL table definitions in the database cleanup and migration tests to use camelCase naming conventions.
- Implemented migration tests to ensure legacy column names are correctly renamed to camelCase equivalents.
- Ensured that existing data is preserved during the migration process and that views referencing old column names are dropped before renaming.
- Verified that the migration function is idempotent, allowing for safe re-execution without data loss.

front/plugins/sync/config.json

@@ -7,7 +7,7 @@
   "mapped_to_table": "CurrentScan",
   "data_filters": [
     {
-      "compare_column": "Object_PrimaryID",
+      "compare_column": "objectPrimaryId",
       "compare_operator": "==",
       "compare_field_id": "txtMacFilter",
       "compare_js_template": "'{value}'.toString()",
@@ -667,7 +667,7 @@
   ],
   "database_column_definitions": [
     {
-      "column": "Index",
+      "column": "index",
       "css_classes": "col-sm-2",
       "show": true,
       "type": "none",
@@ -684,7 +684,7 @@
       ]
     },
     {
-      "column": "Object_PrimaryID",
+      "column": "objectPrimaryId",
       "mapped_to_column": "scanMac",
       "css_classes": "col-sm-3",
       "show": true,
@@ -710,7 +710,7 @@
       ]
     },
     {
-      "column": "Object_SecondaryID",
+      "column": "objectSecondaryId",
       "mapped_to_column": "scanLastIP",
       "css_classes": "col-sm-2",
       "show": true,
@@ -736,7 +736,7 @@
       ]
     },
     {
-      "column": "Watched_Value1",
+      "column": "watchedValue1",
       "mapped_to_column": "scanName",
       "css_classes": "col-sm-2",
       "show": true,
@@ -754,7 +754,7 @@
       ]
     },
     {
-      "column": "Watched_Value2",
+      "column": "watchedValue2",
       "mapped_to_column": "scanVendor",
       "css_classes": "col-sm-2",
       "show": true,
@@ -772,7 +772,7 @@
       ]
     },
     {
-      "column": "Watched_Value3",
+      "column": "watchedValue3",
       "mapped_to_column": "scanSyncHubNode",
       "css_classes": "col-sm-2",
       "show": true,
@@ -790,7 +790,7 @@
       ]
     },
     {
-      "column": "Watched_Value4",
+      "column": "watchedValue4",
       "css_classes": "col-sm-2",
       "show": true,
       "type": "label",
@@ -836,7 +836,7 @@
       ]
     },
     {
-      "column": "DateTimeCreated",
+      "column": "dateTimeCreated",
       "css_classes": "col-sm-2",
       "show": true,
       "type": "label",
@@ -861,7 +861,7 @@
       ]
     },
     {
-      "column": "DateTimeChanged",
+      "column": "dateTimeChanged",
       "css_classes": "col-sm-2",
       "show": true,
       "type": "label",
@@ -886,7 +886,7 @@
       ]
     },
     {
-      "column": "Status",
+      "column": "status",
       "css_classes": "col-sm-1",
       "show": true,
       "type": "replace",