docs: add section about flags migration

docs/src/docs/product/migration-guide.mdx

@@ -2046,3 +2046,104 @@ version: "2"
 ```
 
 </details>
+
+### Command Line Flags
+
+The following flags have been removed:
+
+- `--disable-all`
+- `--enable-all`
+- `-p, --presets`
+- `--fast`
+- `-e, --exclude`
+- `--exclude-case-sensitive`
+- `--exclude-dirs-use-default`
+- `--exclude-dirs`
+- `--exclude-files`
+- `--exclude-generated`
+- `--exclude-use-default`
+- `--go string`
+- `--sort-order`
+- `--sort-results`
+- `--out-format`
+
+#### `--out-format`
+
+`--out-format` has been replaced with the following flags:
+
+```bash
+# Previously 'colored-line-number' and 'line-number'
+--output.text.path
+--output.text.print-linter-name
+--output.text.print-issued-lines
+--output.text.colors
+```
+
+```bash
+# Previously 'json'
+--output.json.path
+```
+
+```bash
+# Previously 'colored-tab' and 'tab'
+--output.tab.path
+--output.tab.print-linter-name
+--output.tab.colors
+```
+
+```bash
+# Previously 'html'
+--output.html.path
+```
+
+```bash
+# Previously 'checkstyle'
+--output.checkstyle.path
+```
+
+```bash
+# Previously 'code-climate'
+--output.code-climate.path
+```
+
+```bash
+# Previously 'junit-xml' and 'junit-xml-extended'
+--output.junit-xml.path
+--output.junit-xml.extended
+```
+
+```bash
+# Previously 'teamcity'
+--output.teamcity.path
+```
+
+```bash
+# Previously 'sarif'
+--output.sarif.path
+```
+
+#### `--disable-all` and `--enable-all`
+
+`--disable-all` has been replaced with `--default=none`.
+
+`--enable-all` has been replaced with `--default=all`.
+
+#### Example
+
+<details>
+  <summary style={{color: '#737380', paddingLeft: '1rem'}}>v1</summary>
+
+  ```bash
+  golangci-lint run --disable-all --enable-only=govet --out-format=colored-tab --sort-order=linter --sort-results
+  ```
+
+</details>
+
+<details>
+  <summary style={{color: '#737380', paddingLeft: '1rem'}}>v2</summary>
+
+  ```bash
+  golangci-lint run --default=none --enable-only=govet --out-format=colored-tab
+  ```
+
+</details>