in_someip: Initial input plugin documentation.

[anthonypayne-GM]

Adds the documentation for the new in_someip plugin:
fluent/fluent-bit#9570

[eschabell]

@esmerel can you review for style, this is waiting on code PR fluent/fluent-bit#9570 before we merge this and is tagged so.

[esmerel]

Updated (mostly) for style and consistency. It's not exactly how I want it because the web editor doesn't handle suggested changes with code ticks well.

[esmerel]

Suggested change

	The **someip** input plugin is used to interact with a SOME/IP communication network to subscribe to events and to exchange request/response with SOME/IP services.
	The _someip_ input plugin is used to interact with a SOME/IP communication network to subscribe to events and to exchange request/response with SOME/IP services.

Matching style of other pages.

[esmerel]

Suggested change

	This plugin uses the [vsomeip library](https://github.com/COVESA/vsomeip) \(built-in dependency\).
	This plugin uses the [vsomeip library](https://github.com/COVESA/vsomeip) (built-in dependency).

We don't need to escape it, the gitbook renderer is smart enough to figure it out :)

[esmerel]

Suggested change

	| Event | SOME/IP event to subscribe to. The configuration can have multiple events, one on each line. An event is identified by a comma separated list with, "_service ID_, _event ID_, _event group ID 1_, _event group ID 2_, ...". The Event must include at least one _event group ID_, but can be associated with multiple. |
	| RPC | SOME/IP request to send when service is available. The configuration can have multiple RPCs, one on each line. An RPC is composed as a comma separated list with, "_service ID_, _service instance_, _method ID_, _request payload_". The request payload should be a should be base64 encoded |
	| `Event` | SOME/IP event to subscribe to. The configuration can have multiple events, one on each line. An event is identified by a comma separated list with, `service_ID, event_ID, event_group_ID_1, event_group_ID_2, ...`. The event must include at least one `event_group_ID`, but can be associated with multiple. |
	| `RPC` | SOME/IP request to send when service is available. The configuration can have multiple RPCs, one on each line. An RPC is composed as a comma separated list with, `service_ID, service_instance, method_ID, request_payload". The request payload should be base64 encoded. |

Stylistic consistency

[esmerel]

Suggested change

	## Getting Started
	In order to subscribe to SOME/IP events or send request/receive SOME/IP response, you can run the plugin from the command line or through the configuration file:
	## Get Started
	To subscribe to SOME/IP events or send request/receive SOME/IP response, run the plugin from the command line or through the configuration file:

[esmerel]

Suggested change

	### Command Line
	The **someip** plugin can be enabled with options from the command line:
	```bash
	$ ./fluent-bit -i someip -p Event=4,1,32768,1 -o stdout
	```
	### Command line
	The _someip_ plugin can be enabled with options from the command line:
	```bash
	./fluent-bit -i someip -p Event=4,1,32768,1 -o stdout

[esmerel]

Suggested change

	### Configuration File
	In your main configuration file append the following _Input_ & _Output_ sections:
	### Configuration file
	In your main configuration file append the following sections:

[esmerel]

Suggested change

	{% tab title="fluent-bit.conf" %}
	```text
	[INPUT]
	Name someip
	Tag in.someip
	Event 4,1,32768,1
	Event 4,1,32769,2
	RPC 4,1,1,CgAQAw==
	[OUTPUT]
	Name stdout
	```
	{% endtab %}
	{% tab title="fluent-bit.yaml" %}
	```yaml
	pipeline:
	inputs:
	- name: someip
	Event: '4,1,32768,1'
	Event: '4,1,32769,2'
	RPC: '4,1,1,CgAQAw=='
	```
	{% tab title="fluent-bit.yaml" %}
	```yaml
	pipeline:
	inputs:
	- name: someip
	Event: '4,1,32768,1'
	Event: '4,1,32769,2'
	RPC: '4,1,1,CgAQAw=='
	{% tab title="fluent-bit.conf" %}
	```text
	[INPUT]
	Name someip
	Tag in.someip
	Event 4,1,32768,1
	Event 4,1,32769,2
	RPC 4,1,1,CgAQAw==
	[OUTPUT]
	Name stdout

{% endtab %}

Swapping tab order to put current config type first.