[FL-2832] fbt: more fixes & improvements (#1854)

* github: bundling debug folder with scripts; docs: fixes & updates; fbt: added FAP_EXAMPLES variable to enable building example apps. Disabled by default. fbt: added TERM to list of proxied environment variables
* fbt: better help output; disabled implicit_deps_unchanged; added color to import validator reports
* fbt: moved debug configuration to separate tool
* fbt: proper dependency tracker for SDK source file; renamed linker script for external apps
* fbt: fixed debug elf path
* fbt: packaging sdk archive
* scripts: fixed sconsdist.py
* fbt: reworked sdk packing; docs: updates
* docs: info on cli target; linter fixes
* fbt: moved main code to scripts folder
* scripts: packing update into .tgz
* fbt, scripts: reworked copro_dist to build .tgz
* scripts: fixed naming for archived updater package
* Scripts: fix ぐるぐる回る

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

scripts/fbt_tools/fbt_debugopts.py

@@ -0,0 +1,41 @@
+def generate(env, **kw):
+    env.SetDefault(
+        OPENOCD_GDB_PIPE=[
+            "|openocd -c 'gdb_port pipe; log_output debug/openocd.log' ${[SINGLEQUOTEFUNC(OPENOCD_OPTS)]}"
+        ],
+        GDBOPTS_BASE=[
+            "-ex",
+            "target extended-remote ${GDBREMOTE}",
+            "-ex",
+            "set confirm off",
+            "-ex",
+            "set pagination off",
+        ],
+        GDBOPTS_BLACKMAGIC=[
+            "-ex",
+            "monitor swdp_scan",
+            "-ex",
+            "monitor debug_bmp enable",
+            "-ex",
+            "attach 1",
+            "-ex",
+            "set mem inaccessible-by-default off",
+        ],
+        GDBPYOPTS=[
+            "-ex",
+            "source debug/FreeRTOS/FreeRTOS.py",
+            "-ex",
+            "source debug/flipperapps.py",
+            "-ex",
+            "source debug/PyCortexMDebug/PyCortexMDebug.py",
+            "-ex",
+            "svd_load ${SVD_FILE}",
+            "-ex",
+            "compare-sections",
+        ],
+        JFLASHPROJECT="${ROOT_DIR.abspath}/debug/fw.jflash",
+    )
+
+
+def exists(env):
+    return True