Add a Readme and Owners

Signed-off-by: Hunter Madison <[email protected]>

plugins/kafka/OWNERS

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+reviewers:
+  - hmadison

plugins/kafka/README.md

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+# Kafka Events Plugin
+
+This repository contains the `kafka` plugin for `Falco`.
+
+# Event Source
+
+The event source for `kafka` events is `kafka`.
+
+# Supported Fields
+
+This plugin does not provide field extraction.
+
+# Development
+## Requirements
+
+You need:
+* `Go` >= 1.22.2
+
+## Build
+
+```shell
+make
+```
+
+# Settings
+
+Only `init` accepts settings:
+
+* `brokers`: The list of Kafka brokers to consume messages from.
+* `groupId`: The consumer group identifier.
+* `topics`: The topics to consume from.
+* `tlsConfig`: Configuration for TLS encryption.
+
+# Configurations
+
+* `falco.yaml`
+
+  ```yaml
+  plugins:
+    - name: kafka
+      library_path: /usr/share/falco/plugins/libkafka.so
+      init_config:
+        init_config: |
+          {
+            "brokers": ["host.docker.internal:9094"],
+            "topics": ["example2"],
+            "groupId": "example1",
+            "tlsConfig": {
+              "caCertPath": "/mnt/certs/ca.pem",
+              "userCertPath": "/mnt/certs/user.pem",
+              "userKeyPath": "/mnt/certs/key.pem"
+            }
+          }
+      open_params: ''
+
+  load_plugins: [kafka]
+  ```