Add professional emoji to readme.md section headers

Co-authored-by: bettse <115752+bettse@users.noreply.github.com>

readme.md

@@ -1,13 +1,13 @@
-# Seader
+# 🔐 Seader
 
 A [Flipper Zero](https://flipperzero.one/) application (aka "fap") 
 that read credential from HID: iClass, iClass SE, Desfire EV1/EV2, and Seos using a HID SAM and UART adapter.  Latest release on the [App Catalog](https://lab.flipper.net/apps/seader).
 
-## Bugs
+## 🐬 Bugs
 
 File issues in [GitHub](https://github.com/bettse/seader/issues).
 
-## Hardware
+## 🛠️ Hardware
 
 ### Option 1: NARD flipper add-on
 
@@ -42,7 +42,7 @@ Optionally 3d print a [case designed by sean](https://www.printables.com/model/5
 | TX                 | 16          |
 | RX                 | 15          |
 
-## Development
+## 🧩 Development
 
 ### To Build App
 
@@ -55,7 +55,7 @@ Optionally 3d print a [case designed by sean](https://www.printables.com/model/5
  * Install git version of [asnc1](https://github.com/vlm/asn1c) (`brew install asn1c --head` on macos)
  * Run `asn1c -D ./lib/asn1 -no-gen-example -no-gen-OER -no-gen-PER -pdu=all seader.asn1` in in root to generate asn1c files
 
-## References
+## 🗃️ References
 
 - [omnikey_5025_cl_software_developer_guide_mn_en](https://www.virtualsecurity.nl/amfile/file/download/file/18/product/1892/)
 - [omnikey_5326_dfr_softwaredeveloperguide](https://www.hidglobal.com/sites/default/files/documentlibrary/omnikey_5326_dfr_softwaredeveloperguide.pdf)
@@ -63,7 +63,7 @@ Optionally 3d print a [case designed by sean](https://www.printables.com/model/5
 - [PLT-03362 A.0 - iCLASS Reader Writer Migration Application Note](http://web.archive.org/web/20230330180023/https://info.hidglobal.com/rs/289-TSC-352/images/PLT-03362%20A.0%20-%20iCLASS%20Reader%20Writer%20Migration%20Application%20Note.pdf)
 - [HID SE reader消息模块的ANS.1 BER学习](https://blog.csdn.net/eyasys/article/details/8501200)
 
-## Memory usage commands
+## 💾 Memory usage commands
 
 - `arm-none-eabi-nm ~/.ufbt/build/seader.fap -CS --size-sort`
 - `arm-none-eabi-readelf ~/.ufbt/build/seader.fap -t`