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.

docs/PLUGINS_DEV.md

@@ -179,13 +179,13 @@ Quick reference:
 
 | Column | Name | Required | Example |
 |--------|------|----------|---------|
-| 0 | Object_PrimaryID | **YES** | `"device_name"` or `"192.168.1.1"` |
-| 1 | Object_SecondaryID | no | `"secondary_id"` or `null` |
+| 0 | objectPrimaryId | **YES** | `"device_name"` or `"192.168.1.1"` |
+| 1 | objectSecondaryId | no | `"secondary_id"` or `null` |
 | 2 | DateTime | **YES** | `"2023-01-02 15:56:30"` |
-| 3 | Watched_Value1 | **YES** | `"online"` or `"200"` |
-| 4 | Watched_Value2 | no | `"ip_address"` or `null` |
-| 5 | Watched_Value3 | no | `null` |
-| 6 | Watched_Value4 | no | `null` |
+| 3 | watchedValue1 | **YES** | `"online"` or `"200"` |
+| 4 | watchedValue2 | no | `"ip_address"` or `null` |
+| 5 | watchedValue3 | no | `null` |
+| 6 | watchedValue4 | no | `null` |
 | 7 | Extra | no | `"additional data"` or `null` |
 | 8 | ForeignKey | no | `"aa:bb:cc:dd:ee:ff"` or `null` |
 
@@ -243,7 +243,7 @@ Control which rows display in the UI:
 {
   "data_filters": [
     {
-      "compare_column": "Object_PrimaryID",
+      "compare_column": "objectPrimaryId",
       "compare_operator": "==",
       "compare_field_id": "txtMacFilter",
       "compare_js_template": "'{value}'.toString()",
@@ -267,7 +267,7 @@ To import plugin data into NetAlertX tables for device discovery or notification
   "mapped_to_table": "CurrentScan",
   "database_column_definitions": [
     {
-      "column": "Object_PrimaryID",
+      "column": "objectPrimaryId",
       "mapped_to_column": "scanMac",
       "show": true,
       "type": "device_mac",
@@ -345,7 +345,7 @@ See [PLUGINS_DEV_SETTINGS.md](PLUGINS_DEV_SETTINGS.md) for complete settings doc
 
 ### Plugin Output Format
 ```
-Object_PrimaryID|Object_SecondaryID|DateTime|Watched_Value1|Watched_Value2|Watched_Value3|Watched_Value4|Extra|ForeignKey
+objectPrimaryId|objectSecondaryId|DateTime|watchedValue1|watchedValue2|watchedValue3|watchedValue4|Extra|ForeignKey
 ```
 9 required columns, 4 optional helpers = 13 max