Update alpha to 0.15 and README compat table (meta-pytorch#1482)

Author: NicolasHug

README.md

@@ -172,16 +172,17 @@ The following table indicates the compatibility between versions of
 | `torchcodec`       | `torch`            | Python              |
 | ------------------ | ------------------ | ------------------- |
 | `main` / `nightly` | `main` / `nightly` | `>=3.10`, `<=3.14`   |
+| `0.14`             | `>=2.11`             | `>=3.10`, `<=3.14`   |
 | `0.13`             | `>=2.11`             | `>=3.10`, `<=3.14`   |
 | `0.12`             | `>=2.11`             | `>=3.10`, `<=3.14`   |
-| `0.11`             | `2.11`             | `>=3.10`, `<=3.14`   |
-| `0.10`             | `2.10`             | `>=3.10`, `<=3.14`   |
 
 <details>
     <summary>older versions</summary>
 
 | `torchcodec`       | `torch`            | Python              |
 | ------------------ | ------------------ | ------------------- |
+| `0.11`             | `2.11`             | `>=3.10`, `<=3.14`   |
+| `0.10`             | `2.10`             | `>=3.10`, `<=3.14`   |
 | `0.9`              | `2.9`              | `>=3.10`, `<=3.14`   |
 | `0.8`              | `2.9`              | `>=3.10`, `<=3.13`   |
 | `0.7`              | `2.8`              | `>=3.9`, `<=3.13`   |

version.txt

@@ -1 +1 @@
-0.14.0a0
+0.15.0a0