Add diagrams and sponsor badge to documentation

Replaced text-based diagrams in lifetimes and modules chapters with image diagrams for improved clarity. Added a message passing channels diagram to the concurrency chapter. Introduced a sponsor badge in the README and created a FUNDING.yml file to support project sponsorship.

Author: arrkpong

.github/FUNDING.yml

@@ -0,0 +1,13 @@
+# These are supported funding model platforms
+
+github: # [string] Replace with up to 4 GitHub Sponsors-supported usernames e.g., [user1, user2]
+patreon: # [string] Replace with a single Patreon username
+open_collective: # [string] Replace with a single Open Collective username
+ko_fi: # [string] Replace with a single Ko-fi username
+tidelift: # [string] Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # [string] Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # [string] Replace with a single Liberapay username
+issuehunt: # [string] Replace with a single IssueHunt username
+otechie: # [string] Replace with a single Otechie username
+lfx_crowdfunding: # [string] Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
+custom: ['buymeacoffee.com/arrkpong'] # [list] Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

README.md

@@ -5,6 +5,7 @@
 [![Language: Thai](https://img.shields.io/badge/Language-Thai%20🇹🇭-blue.svg)](https://premix-kernel.github.io/rust-tutorial)
 [![Rust](https://img.shields.io/badge/Rust-1.83+-orange.svg)](https://www.rust-lang.org/)
 [![mdBook](https://img.shields.io/badge/Made%20with-mdBook-blue.svg)](https://rust-lang.github.io/mdBook/)
+[![Sponsor](https://img.shields.io/badge/Sponsor-%E2%9D%A4-pink)](https://github.com/sponsors/premix-kernel)
 
 > 🦀 เอกสารสอนภาษา Rust สำหรับผู้เริ่มต้น | คำอธิบายภาษาไทย | โค้ดภาษาอังกฤษ
 

docs/src/ch10-generics-traits/04-lifetimes.md

@@ -21,23 +21,7 @@
 
 ### 🧠 Mental Model
 
-```text
-+---------------------------------------------------------------+
-|                    Lifetime = Time Period                     |
-+---------------------------------------------------------------+
-|                                                               |
-|   fn longest<'a>(x: &'a str, y: &'a str) -> &'a str           |
-|                    ^          ^              ^                |
-|                    |          |              |                |
-|                    +----------+--------------+                |
-|                              |                                |
-|                    "All share the same lifetime"              |
-|                                                               |
-|   Rule: Return value lives as long as the                     |
-|         shortest-lived input between x and y                  |
-|                                                               |
-+---------------------------------------------------------------+
-```
+![Lifetime Scopes Diagram](../images/lifetime_scopes.png)
 
 ### 🔧 Common Patterns
 

docs/src/ch11-modules/02-modules.md

@@ -6,18 +6,7 @@
 
 โปรเจกต์ Rust มีโครงสร้างเป็น tree:
 
-```text
-crate (root)
-├── front_of_house
-│   ├── hosting
-│   │   ├── add_to_waitlist
-│   │   └── seat_at_table
-│   └── serving
-│       ├── take_order
-│       └── serve_order
-└── back_of_house
-    └── cook_order
-```
+![Module Tree Diagram](../images/module_tree.png)
 
 ---
 

docs/src/ch15-concurrency/02-message-passing.md

@@ -4,6 +4,9 @@
 
 ## Basic Channel
 
+![Message Passing Channels Diagram](../images/channels.png)
+
+
 ```rust,ignore
 use std::sync::mpsc;
 use std::thread;