Speedup SD card & enlarge your RAM. (#1649)

* FuriHal: sram2 memory manager
* FuriHal: sram2 memory allocator
* FuriHal: allow NULL buffers for txrx in spi hal
* SD card: sector cache
* FuriHal: fix init in memory hal
* RPC: STARTUP instead SERVICE
* Memory: pool "free" command
* Thread: service can be statically allocated in a memory pool

Co-authored-by: あく <alleteam@gmail.com>

firmware/targets/f7/fatfs/sector_cache.h

@@ -0,0 +1,36 @@
+#pragma once
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Init sector cache system
+ */
+void sector_cache_init();
+
+/**
+ * @brief Get sector data from cache
+ * @param n_sector Sector number
+ * @return Pointer to sector data or NULL if not found
+ */
+uint8_t* sector_cache_get(uint32_t n_sector);
+
+/**
+ * @brief Put sector data to cache
+ * @param n_sector Sector number
+ * @param data Pointer to sector data
+ */
+void sector_cache_put(uint32_t n_sector, uint8_t* data);
+
+/**
+ * @brief Invalidate sector cache for given range
+ * @param start_sector Start sector number
+ * @param end_sector End sector number
+ */
+void sector_cache_invalidate_range(uint32_t start_sector, uint32_t end_sector);
+
+#ifdef __cplusplus
+}
+#endif