fbt fixes for mfbt pt2 (#1951)

* fbt: split sdk management code
* scripts: fixed import handling
* fbt: sdk: reformatted paths
* scrips: dist: bundling libs as a build artifact
* fbt: sdk: better path management
* typo fix
* fbt: sdk: minor path handling fixes
* toolchain: fixed windows toolchain download
* fbt: minor refactorin
* fbt: moved sdk management code to extapps.scons
* fbt: fixed sdk symbols header path; disabled -fstack-usage
* fbt: changed pathing for .py scripts
* fbt: changed SDK_HEADERS pathing; added libusb to SDK; added icon_i.h to SDK; added hw target to SDK meta
* fbt: added libusb headers to SDK
* picopass: include cleanup; api: added subghz/registry.h; api: added mbedtls to exported headers
* picopass: fixed formatting
* fbt: fixed COPRO_ASSETS_SCRIPT
* sdk: added basic infrared apis
* toolchain: added ufbt to list of legal fbtenv callers; updated error messages
* fbt: changed manifest collection & icon processing code
* fbt: simpler srcdir lookup
* toolchain: path management fixes; fbt: fixes for fap private libs paths
* scripts: toolchain: reworked download on Windows
* toolchain: v17
* scripts: added colorlog for logging
* Github: fix unit tests

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

SConstruct

@@ -33,10 +33,6 @@ coreenv = SConscript(
 )
 SConscript("site_scons/cc.scons", exports={"ENV": coreenv})
 
-# Store root dir in environment for certain tools
-coreenv["ROOT_DIR"] = Dir(".")
-
-
 # Create a separate "dist" environment and add construction envs to it
 distenv = coreenv.Clone(
     tools=[
@@ -233,13 +229,13 @@ distenv.PhonyTarget(
 # Linter
 distenv.PhonyTarget(
     "lint",
-    "${PYTHON3} scripts/lint.py check ${LINT_SOURCES}",
+    "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py check ${LINT_SOURCES}",
     LINT_SOURCES=firmware_env["LINT_SOURCES"],
 )
 
 distenv.PhonyTarget(
     "format",
-    "${PYTHON3} scripts/lint.py format ${LINT_SOURCES}",
+    "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py format ${LINT_SOURCES}",
     LINT_SOURCES=firmware_env["LINT_SOURCES"],
 )
 
@@ -280,7 +276,7 @@ distenv.PhonyTarget(
 )
 
 # Start Flipper CLI via PySerial's miniterm
-distenv.PhonyTarget("cli", "${PYTHON3} scripts/serial_cli.py")
+distenv.PhonyTarget("cli", "${PYTHON3} ${FBT_SCRIPT_DIR}/serial_cli.py")
 
 
 # Find blackmagic probe