docs: comprehensive documentation updates and modernization

- Update BUILDING.md with current build system information
- Modernize various README files across the project
- Update CHANGELOG.md with recent changes
- Improve documentation consistency and formatting
- Update platform-specific documentation (iOS, Electron, Docker)
- Enhance test documentation and build guides

ios/App/app_privacy_manifest_fixer/README.md

@@ -150,6 +150,7 @@ The privacy manifest templates are stored in the [`Templates`](https://github.co
 ### Template Types
 
 The templates are categorized as follows:
+
 - **AppTemplate.xcprivacy**: A privacy manifest template for the app.
 - **FrameworkTemplate.xcprivacy**: A generic privacy manifest template for frameworks.
 - **FrameworkName.xcprivacy**: A privacy manifest template for a specific framework, available only in the `Templates/UserTemplates` directory.
@@ -157,20 +158,24 @@ The templates are categorized as follows:
 ### Template Priority
 
 For an app, the priority of privacy manifest templates is as follows:
+
 - `Templates/UserTemplates/AppTemplate.xcprivacy` > `Templates/AppTemplate.xcprivacy`
 
 For a specific framework, the priority of privacy manifest templates is as follows:
+
 - `Templates/UserTemplates/FrameworkName.xcprivacy` > `Templates/UserTemplates/FrameworkTemplate.xcprivacy` > `Templates/FrameworkTemplate.xcprivacy`
 
 ### Default Templates
 
 The default templates are located in the `Templates` root directory and currently include the following templates:
+
 - `Templates/AppTemplate.xcprivacy`
 - `Templates/FrameworkTemplate.xcprivacy`
 
 These templates will be modified based on the API usage analysis results, especially the `NSPrivacyAccessedAPIType` entries, to generate new privacy manifests for fixes, ensuring compliance with App Store requirements.
 
 **If adjustments to the privacy manifest template are needed, such as in the following scenarios, avoid directly modifying the default templates. Instead, use a custom template. If a custom template with the same name exists, it will take precedence over the default template for fixes.**
+
 - Generating a non-compliant privacy manifest due to inaccurate API usage analysis.
 - Modifying the reason declared in the template.
 - Adding declarations for collected data.
@@ -198,6 +203,7 @@ The privacy access API categories and their associated declared reasons in `Fram
 ### Custom Templates
 
 To create custom templates, place them in the `Templates/UserTemplates` directory with the following structure:
+
 - `Templates/UserTemplates/AppTemplate.xcprivacy`
 - `Templates/UserTemplates/FrameworkTemplate.xcprivacy`
 - `Templates/UserTemplates/FrameworkName.xcprivacy`
@@ -205,6 +211,7 @@ To create custom templates, place them in the `Templates/UserTemplates` director
 Among these templates, only `FrameworkTemplate.xcprivacy` will be modified based on the API usage analysis results to adjust the `NSPrivacyAccessedAPIType` entries, thereby generating a new privacy manifest for framework fixes. The other templates will remain unchanged and will be directly used for fixes.
 
 **Important Notes:**
+
 - The template for a specific framework must follow the naming convention `FrameworkName.xcprivacy`, where `FrameworkName` should match the name of the framework. For example, the template for `Flutter.framework` should be named `Flutter.xcprivacy`.
 - For macOS frameworks, the naming convention should be `FrameworkName.Version.xcprivacy`, where the version name is added to distinguish different versions. For a single version macOS framework, the `Version` is typically `A`.
 - The name of an SDK may not exactly match the name of the framework. To determine the correct framework name, check the `Frameworks` directory in the application bundle after building the project.