[FL-2627] Flipper applications: SDK, build and debug system (#1387)

* Added support for running applications from SD card (FAPs - Flipper Application Packages)
* Added plugin_dist target for fbt to build FAPs
* All apps of type FlipperAppType.EXTERNAL and FlipperAppType.PLUGIN are built as FAPs by default
* Updated VSCode configuration for new fbt features - re-deploy stock configuration to use them
* Added debugging support for FAPs with fbt debug & VSCode
* Added public firmware API with automated versioning

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: SG <who.just.the.doctor@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

firmware/targets/f7/application-ext.ld

@@ -1,9 +1,17 @@
+FORCE_COMMON_ALLOCATION
+
 SECTIONS
 {
-	.text 0x00000000 :
+	.text 0x00000000 : ALIGN(4)
 	{
 		*(.text)
+		*(.stub)
+		*(.text*)
 		*(.text.*)
+		*(.text._*)
+
+		KEEP (*(.init))
+		KEEP (*(.fini))
 	}
 
 	.rodata :
@@ -20,15 +28,22 @@ SECTIONS
 		*(.data.*)
 	}
 
+
 	.bss :
 	{
 		*(.bss)
-		*(.bss.*)
+		*(.bss*)
 		*(.sbss)
-		*(.sbss.*)
+		*(.sbss*)
 		*(COMMON)
 	}
 
+	.ARM.attributes :
+	{
+		*(.ARM.attributes)
+		*(.ARM.attributes.*)
+	}
+
 	/DISCARD/ :
 	{
 		*(.comment)