[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>

.vscode/example/launch.json

@@ -31,7 +31,10 @@
             ],
             "postAttachCommands": [
                 // "attach 1",
-                "compare-sections",
+                // "compare-sections",
+                "source debug/flipperapps.py",
+                // "source debug/FreeRTOS/FreeRTOS.py",
+                // "svd_load debug/STM32WB55_CM4.svd"
             ]
             // "showDevDebugOutput": "raw",
         },
@@ -50,7 +53,8 @@
                 "attach 1",
                 "set confirm off",
                 "set mem inaccessible-by-default off",
-                "compare-sections",
+                "source debug/flipperapps.py",
+                // "compare-sections",
             ]
             // "showDevDebugOutput": "raw",
         },
@@ -65,6 +69,9 @@
             "device": "STM32WB55RG",
             "svdFile": "./debug/STM32WB55_CM4.svd",
             "rtos": "FreeRTOS",
+            "postAttachCommands": [
+                "source debug/flipperapps.py",
+            ]
             // "showDevDebugOutput": "raw",
         },
         {
@@ -73,7 +80,7 @@
             "request": "launch",
             "program": "./lib/scons/scripts/scons.py",
             "args": [
-                "sdk"
+                "plugin_dist"
             ]
         },
         {