docs(README): Document all CLI options

Fixes: #613

Author: matz3

README.md

@@ -24,6 +24,11 @@
 			- [`--ignore-pattern`](#--ignore-pattern)
 			- [`--config`](#--config)
 			- [`--ui5-config`](#--ui5-config)
+			- [`--log-level`](#--log-level)
+			- [`--verbose`](#--verbose)
+			- [`--perf`](#--perf)
+			- [`--silent`](#--silent)
+			- [`--version`](#--version)
 	- [Configuration](#configuration)
 		- [Configuration File Location](#configuration-file-location)
 		- [Supported Configuration File Names](#supported-configuration-file-names)
@@ -202,6 +207,53 @@ Set a path for the desired UI5 yaml config file (default: `./ui5.yaml`).
 ui5lint --ui5-config ./configs/ui5-custom.yaml
 ```
 
+#### `--log-level`
+
+Set the logging level (default: `info`).
+
+Possible values are: `silent`, `error`, `warn`, `info`, `perf`, `verbose`, `silly`
+
+**Example:**
+```sh
+ui5lint --log-level=warn
+```
+
+#### `--verbose`
+
+Enable verbose logging.
+
+**Example:**
+```sh
+ui5lint --verbose
+```
+
+#### `--perf`
+
+Enable performance measurements and related logging.
+
+**Example:**
+```sh
+ui5lint --perf
+```
+
+#### `--silent`
+
+Disable all log output.
+
+**Example:**
+```sh
+ui5lint --silent
+```
+
+#### `--version`
+
+Prints the current version and CLI script location.
+
+**Example:**
+```sh
+ui5lint --version
+```
+
 ## Configuration
 
 UI5 linter can easily be configured with an external configuration file, allowing you to customize how the linter behaves. For example, you can tell it to ignore specific files or directories.