[FL-2859,2838] fbt: improvements for FAPs (#1813)

* fbt: assets builder for apps WIP
* fbt: automatically building private fap assets
* docs: details on how to use image assets
* fbt: renamed fap_assets -> fap_icons
* fbt: support for fap_extbuild field
* docs: info on fap_extbuild
* fbt: added --proxy-env parame ter
* fbt: made firmware_cdb & updater_cdb targets always available
* fbt: renamed fap_icons -> fap_icon_assets
* fbt: deprecated firmware_* target names for faps; new alias is "fap_APPID"
* fbt: changed intermediate file locations for external apps
* fbt: support for fap_private_libs; docs: updates
* restored mbedtls as global lib
* scripts: lint.py: skip "lib" subfolder
* fbt: Sanity checks for building advanced faps as part of fw
* docs: info on fap_private_libs; fbt: optimized *.fam indexing
* fbt: cleanup; samples: added sample_icons app
* fbt: moved example app to applications/examples
* linter fix
* docs: readme fixes
* added applications/examples/application.fam stub
* docs: more info on private libs

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

applications/examples/application.fam

@@ -0,0 +1,5 @@
+App(
+    appid="sample_apps",
+    name="Sample apps bundle",
+    apptype=FlipperAppType.METAPACKAGE,
+)

applications/examples/example_images/application.fam

@@ -0,0 +1,10 @@
+App(
+    appid="example_images",
+    name="Example: Images",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="example_images_main",
+    requires=["gui"],
+    stack_size=1 * 1024,
+    fap_category="Examples",
+    fap_icon_assets="images",
+)

applications/examples/example_images/example_images.c

@@ -0,0 +1,79 @@
+#include <furi.h>
+#include <furi_hal.h>
+
+#include <gui/gui.h>
+#include <input/input.h>
+
+#include "example_images_icons.h"
+
+typedef struct {
+    uint8_t x, y;
+} ImagePosition;
+
+static ImagePosition image_position = {.x = 0, .y = 0};
+
+// Screen is 128x64 px
+static void app_draw_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
+
+    canvas_clear(canvas);
+    canvas_draw_icon(canvas, image_position.x % 128, image_position.y % 64, &I_dolphin_71x25);
+}
+
+static void app_input_callback(InputEvent* input_event, void* ctx) {
+    furi_assert(ctx);
+
+    FuriMessageQueue* event_queue = ctx;
+    furi_message_queue_put(event_queue, input_event, FuriWaitForever);
+}
+
+int32_t example_images_main(void* p) {
+    UNUSED(p);
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
+
+    // Configure view port
+    ViewPort* view_port = view_port_alloc();
+    view_port_draw_callback_set(view_port, app_draw_callback, view_port);
+    view_port_input_callback_set(view_port, app_input_callback, event_queue);
+
+    // Register view port in GUI
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    InputEvent event;
+
+    bool running = true;
+    while(running) {
+        if(furi_message_queue_get(event_queue, &event, 100) == FuriStatusOk) {
+            if((event.type == InputTypePress) || (event.type == InputTypeRepeat)) {
+                switch(event.key) {
+                case InputKeyLeft:
+                    image_position.x -= 2;
+                    break;
+                case InputKeyRight:
+                    image_position.x += 2;
+                    break;
+                case InputKeyUp:
+                    image_position.y -= 2;
+                    break;
+                case InputKeyDown:
+                    image_position.y += 2;
+                    break;
+                default:
+                    running = false;
+                    break;
+                }
+            }
+        }
+        view_port_update(view_port);
+    }
+
+    view_port_enabled_set(view_port, false);
+    gui_remove_view_port(gui, view_port);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+
+    furi_record_close(RECORD_GUI);
+
+    return 0;
+}

applications/plugins/picopass/application.fam

@@ -10,8 +10,11 @@ App(
     stack_size=4 * 1024,
     order=30,
     fap_icon="../../../assets/icons/Archive/125_10px.png",
-    fap_libs=[
-        "mbedtls",
-    ],
     fap_category="Tools",
+    fap_libs=["mbedtls"],
+    fap_private_libs=[
+        Lib(
+            name="loclass",
+        ),
+    ],
 )

applications/plugins/picopass/picopass_device.h

@@ -7,8 +7,8 @@
 #include <mbedtls/des.h>
 
 #include "rfal_picopass.h"
-#include "loclass/optimized_ikeys.h"
-#include "loclass/optimized_cipher.h"
+#include <optimized_ikeys.h>
+#include <optimized_cipher.h>
 
 #define PICOPASS_DEV_NAME_MAX_LEN 22
 #define PICOPASS_READER_DATA_MAX_SIZE 64