Strip tabs and trailing white spaces, and fix end of files (#748)

* format: Strip trailing whitespaces

We want to get rid of trailing whitespaces completly as they make just git
noice. Much better to start using automated tools to get rid of them once and
not getting them back again. This way git history will be cleaner and review
easier.

Commit was generated with:

    pre-commit run --all-files trailing-whitespace

* format: Files should have exactly one new line end of them

It is good practice that every file has one new line. It is not now days so
mandatory but it also is not nice if file has lot of newlines end of it. We will
use pre-commit which takes automatically care about this so let's fix all.

Commit was generated with:

    pre-commit run --all-files end-of-file-fixer

* format: Convert tabs to spaces

Project mostly use spaces over tabs. When mixing tabs and spaces this usually
makes formatting issues and also when changing those in commits it will make lot
of git noise. We will force spaces most of the time and use pre-commit to fix.

Commit was generated with:

    pre-commit run --all-files remove-tabs

---------

Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>

zephyr/include/bacnet_settings/bacnet_storage.h

@@ -18,10 +18,10 @@
 #define BACNET_STORAGE_ARRAY_INDEX_NONE UINT32_MAX
 
 typedef struct bacnet_storage_key_t {
-	uint16_t object_type;
-	uint32_t object_instance;
-	uint32_t property_id;
-	uint32_t array_index;
+    uint16_t object_type;
+    uint32_t object_instance;
+    uint32_t property_id;
+    uint32_t array_index;
 } BACNET_STORAGE_KEY;
 
 #ifdef __cplusplus
@@ -31,12 +31,12 @@ extern "C" {
 void bacnet_storage_init(void);
 
 void bacnet_storage_key_init(BACNET_STORAGE_KEY *key, uint16_t object_type,
-			     uint32_t object_instance, uint32_t property_id,
-			     uint32_t array_index);
+                 uint32_t object_instance, uint32_t property_id,
+                 uint32_t array_index);
 int bacnet_storage_key_encode(char *buffer, size_t buffer_size,
-			      BACNET_STORAGE_KEY *key);
+                  BACNET_STORAGE_KEY *key);
 int bacnet_storage_set(BACNET_STORAGE_KEY *key, const void *data,
-		       size_t data_size);
+               size_t data_size);
 int bacnet_storage_get(BACNET_STORAGE_KEY *key, void *data, size_t data_size);
 
 #ifdef __cplusplus