[Keyboard] Add SharkPCB rev Alpha support (#7090)

* Add SharkPCB rev Alpha support

* Solve PWM pin assignment 

- Solve PWM pin configuration for the SharkPCB rev.Alpha, which backlight pin is B0

* Update shark.c copyright name

* Update shark.h copyright section

* Apply suggestions from code review

Suggestions from @zvecr and @drashna were accepted and applied for neater code. Also fixed typos and removed unused comments. See [pull request](https://github.com/qmk/qmk_firmware/pull/7090/files#diff-70c0a1f44287ae5810170b4180cdaa5d) for more information.

Co-Authored-By: Joel Challis <git@zvecr.com>
Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update PRODUCT_ID into config.h

* Update metadata info.json

Fields "keyboard_name", "keyboard_folder", "url", "maintainer" were updated

1 files changed, 63 insertions, 0 deletions

diff --git a/keyboards/acheron/shark/info.json b/keyboards/acheron/shark/info.json
new file mode 100644
index 000000000..a2ea784d9
--- /dev/null
+++ b/keyboards/acheron/shark/info.json
@@ -0,0 +1,63 @@
+{
+  "keyboard_name": "SharkPCB",
+  "keyboard_folder": "acheron/shark",
+  "url": "https://gondolindrim.github.io/AcheronDocs/shark/intro.html",
+  "maintainer": "Gondolindrim",
+  "width": 12,
+  "height": 4,
+  "layouts": {
+    "LAYOUT_ortho_4x12": {
+      "key_count": 48,
+      "layout": [
+        { "x": 0, "y": 0 },
+        { "x": 1, "y": 0 },
+        { "x": 2, "y": 0 },
+        { "x": 3, "y": 0 },
+        { "x": 4, "y": 0 },
+        { "x": 5, "y": 0 },
+        { "x": 6, "y": 0 },
+        { "x": 7, "y": 0 },
+        { "x": 8, "y": 0 },
+        { "x": 9, "y": 0 },
+        { "x": 10, "y": 0 },
+        { "x": 11, "y": 0 },
+        { "x": 0, "y": 1 },
+        { "x": 1, "y": 1 },
+        { "x": 2, "y": 1 },
+        { "x": 3, "y": 1 },
+        { "x": 4, "y": 1 },
+        { "x": 5, "y": 1 },
+        { "x": 6, "y": 1 },
+        { "x": 7, "y": 1 },
+        { "x": 8, "y": 1 },
+        { "x": 9, "y": 1 },
+        { "x": 10, "y": 1 },
+        { "x": 11, "y": 1 },
+        { "x": 0, "y": 2 },
+        { "x": 1, "y": 2 },
+        { "x": 2, "y": 2 },
+        { "x": 3, "y": 2 },
+        { "x": 4, "y": 2 },
+        { "x": 5, "y": 2 },
+        { "x": 6, "y": 2 },
+        { "x": 7, "y": 2 },
+        { "x": 8, "y": 2 },
+        { "x": 9, "y": 2 },
+        { "x": 10, "y": 2 },
+        { "x": 11, "y": 2 },
+        { "x": 0, "y": 3 },
+        { "x": 1, "y": 3 },
+        { "x": 2, "y": 3 },
+        { "x": 3, "y": 3 },
+        { "x": 4, "y": 3 },
+        { "x": 5, "y": 3 },
+        { "x": 6, "y": 3 },
+        { "x": 7, "y": 3 },
+        { "x": 8, "y": 3 },
+        { "x": 9, "y": 3 },
+        { "x": 10, "y": 3 },
+        { "x": 11, "y": 3 }
+      ]
+    }
+  }
+}