doc: Added README and AGENTS files

AGENTS.md

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+# wlgol
+
+Simple implementation of Conway's Game of Life for Wayland.
+
+It directly uses C interfaces of Wayland.
+
+Uses pure C language in C11 standard.
+
+Draws directly into the buffer in a shared memory pool. Doesn't use interfaces like OpenGL, Vulkan etc.
+
+Build definition is in `CMakeFiles.txt`.
+
+Uses `cmake` an `ninja` to build the program.
+
+## Useful commands:
+
+Init build environment:
+
+```bash
+mkdir build
+cd build
+cmake -G Ninja ..
+```
+
+Build programs:
+
+```bash
+cmake --build ./build
+```
+
+Run program:
+
+```bash
+./build/wlgol
+```
+

README.md

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+# wlgol
+
+Simple implementation of Conway's Game of Life for Wayland.