[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/fwbin.py

@@ -0,0 +1,54 @@
+from SCons.Builder import Builder
+from SCons.Action import Action
+import SCons
+
+__OBJCOPY_ARM_BIN = "arm-none-eabi-objcopy"
+__NM_ARM_BIN = "arm-none-eabi-nm"
+
+
+def generate(env):
+    env.SetDefault(
+        BIN2DFU="${ROOT_DIR.abspath}/scripts/bin2dfu.py",
+        OBJCOPY=__OBJCOPY_ARM_BIN,  # FIXME
+        NM=__NM_ARM_BIN,  # FIXME
+    )
+    env.Append(
+        BUILDERS={
+            "HEXBuilder": Builder(
+                action=Action(
+                    '${OBJCOPY} -O ihex "${SOURCE}" "${TARGET}"',
+                    "${HEXCOMSTR}",
+                ),
+                suffix=".hex",
+                src_suffix=".elf",
+            ),
+            "BINBuilder": Builder(
+                action=Action(
+                    '${OBJCOPY} -O binary -S "${SOURCE}" "${TARGET}"',
+                    "${BINCOMSTR}",
+                ),
+                suffix=".bin",
+                src_suffix=".elf",
+            ),
+            "DFUBuilder": Builder(
+                action=Action(
+                    '${PYTHON3} "${BIN2DFU}" -i "${SOURCE}" -o "${TARGET}" -a ${IMAGE_BASE_ADDRESS} -l "Flipper Zero F${TARGET_HW}"',
+                    "${DFUCOMSTR}",
+                ),
+                suffix=".dfu",
+                src_suffix=".bin",
+            ),
+        }
+    )
+
+
+def exists(env):
+    try:
+        return env["OBJCOPY"]
+    except KeyError:
+        pass
+
+    if objcopy := env.WhereIs(__OBJCOPY_ARM_BIN):
+        return objcopy
+
+    raise SCons.Errors.StopError("Could not detect objcopy for arm")