Fix naming conventions

Fixed some functions names that were not following my convention

Signed-off-by: Piotr Krygier <piotrkrygier@everyonecancode@xyz>

graphics/src/pipeline_builder.h

@@ -111,7 +111,7 @@ rse_err_t pipelines_build(struct graphics_context_t* context, struct pipeline_in
  * @param[out] pipeline_infos Array of pipelines infos, where new info should be added
  * @return RSE_SUCCESS on success, error code otherwise
  */
-rse_err_t add_pipeline(const struct graphics_context_t* context,
+rse_err_t pipeline_add(const struct graphics_context_t* context,
                        struct pipeline_t* pipeline,
                        struct pipeline_infos_t* pipelines_infos);