Add single channel mode feature.

The addition of a single-channel mode implied further modularisation of the component. This commit has broken the component down into the following modules to avoid a huge single source file and to make unit testing easier.

The modules:

- Separation of public and private code
- *types and *defs
- public relay_chn API
- *adapter
- *output
- *run_info
- *core
- *ctl (control)
- *tilt

Closes #957.

private_include/relay_chn_run_info.h

@@ -0,0 +1,84 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Kozmotronik Tech
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * This is for managing the run information of relay channels.
+ */
+
+#pragma once
+
+#include "relay_chn_priv_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Initialize relay channel run information.
+ *
+ * Initializes the run information for all relay channels with default values.
+ */
+void relay_chn_run_info_init(void);
+
+#if RELAY_CHN_COUNT > 1
+/**
+ * @brief Get run information object for a specific relay channel.
+ *
+ * @param[in] chn_id Channel ID to get run information for.
+ * @return Pointer to run information structure, or NULL if channel ID is invalid.
+ */
+relay_chn_run_info_t *relay_chn_run_info_get(uint8_t chn_id);
+
+/**
+ * @brief Get run information objects for all relay channels.
+ *
+ * @return Pointer to array of run information structures.
+ */
+relay_chn_run_info_t *relay_chn_run_info_get_all(void);
+#else
+/**
+ * @brief Get run information object for the single relay channel.
+ *
+ * @return Pointer to run information structure.
+ */
+relay_chn_run_info_t *relay_chn_run_info_get(void);
+#endif // RELAY_CHN_COUNT > 1
+
+/**
+ * @brief Get the last run command for a relay channel.
+ *
+ * @param[in] run_info Pointer to run information structure.
+ * 
+ * @return Last command that was executed, or RELAY_CHN_CMD_NONE if invalid.
+ */
+relay_chn_cmd_t relay_chn_run_info_get_last_run_cmd(relay_chn_run_info_t *run_info);
+
+/**
+ * @brief Set the last run command for a relay channel.
+ *
+ * @param[in] run_info Pointer to run information structure.
+ * @param[in] cmd Command to set as last run command.
+ */
+void relay_chn_run_info_set_last_run_cmd(relay_chn_run_info_t *run_info, relay_chn_cmd_t cmd);
+
+/**
+ * @brief Get the timestamp of the last run command.
+ *
+ * @param[in] run_info Pointer to run information structure.
+ * 
+ * @return Timestamp in milliseconds of last command, or 0 if invalid.
+ */
+uint32_t relay_chn_run_info_get_last_run_cmd_time_ms(relay_chn_run_info_t *run_info);
+
+/**
+ * @brief Set the timestamp for the last run command.
+ *
+ * @param[in] run_info Pointer to run information structure.
+ * @param[in] time_ms Timestamp in milliseconds to set.
+ */
+void relay_chn_run_info_set_last_run_cmd_time_ms(relay_chn_run_info_t *run_info, uint32_t time_ms);
+
+#ifdef __cplusplus
+}
+#endif