[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>

SConstruct

@@ -7,7 +7,6 @@
 # construction of certain targets behind command-line options.
 
 import os
-import subprocess
 
 DefaultEnvironment(tools=[])
 
@@ -15,17 +14,22 @@ EnsurePythonVersion(3, 8)
 
 # Progress(["OwO\r", "owo\r", "uwu\r", "owo\r"], interval=15)
 
-
 # This environment is created only for loading options & validating file/dir existence
 fbt_variables = SConscript("site_scons/commandline.scons")
-cmd_environment = Environment(tools=[], variables=fbt_variables)
-Help(fbt_variables.GenerateHelpText(cmd_environment))
+cmd_environment = Environment(
+    toolpath=["#/scripts/fbt_tools"],
+    tools=[
+        ("fbt_help", {"vars": fbt_variables}),
+    ],
+    variables=fbt_variables,
+)
 
 # Building basic environment - tools, utility methods, cross-compilation
 # settings, gcc flags for Cortex-M4, basic builders and more
 coreenv = SConscript(
     "site_scons/environ.scons",
     exports={"VAR_ENV": cmd_environment},
+    toolpath=["#/scripts/fbt_tools"],
 )
 SConscript("site_scons/cc.scons", exports={"ENV": coreenv})
 
@@ -35,41 +39,13 @@ coreenv["ROOT_DIR"] = Dir(".")
 
 # Create a separate "dist" environment and add construction envs to it
 distenv = coreenv.Clone(
-    tools=["fbt_dist", "openocd", "blackmagic", "jflash"],
-    OPENOCD_GDB_PIPE=[
-        "|openocd -c 'gdb_port pipe; log_output debug/openocd.log' ${[SINGLEQUOTEFUNC(OPENOCD_OPTS)]}"
+    tools=[
+        "fbt_dist",
+        "fbt_debugopts",
+        "openocd",
+        "blackmagic",
+        "jflash",
     ],
-    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",
     ENV=os.environ,
 )
 
@@ -166,7 +142,7 @@ basic_dist = distenv.DistCommand("fw_dist", distenv["DIST_DEPENDS"])
 distenv.Default(basic_dist)
 
 dist_dir = distenv.GetProjetDirName()
-plugin_dist = [
+fap_dist = [
     distenv.Install(
         f"#/dist/{dist_dir}/apps/debug_elf",
         firmware_env["FW_EXTAPPS"]["debug"].values(),
@@ -176,9 +152,9 @@ plugin_dist = [
         for dist_entry in firmware_env["FW_EXTAPPS"]["dist"].values()
     ),
 ]
-Depends(plugin_dist, firmware_env["FW_EXTAPPS"]["validators"].values())
-Alias("plugin_dist", plugin_dist)
-# distenv.Default(plugin_dist)
+Depends(fap_dist, firmware_env["FW_EXTAPPS"]["validators"].values())
+Alias("fap_dist", fap_dist)
+# distenv.Default(fap_dist)
 
 plugin_resources_dist = list(
     distenv.Install(f"#/assets/resources/apps/{dist_entry[0]}", dist_entry[1])
@@ -189,9 +165,10 @@ distenv.Depends(firmware_env["FW_RESOURCES"], plugin_resources_dist)
 
 # Target for bundling core2 package for qFlipper
 copro_dist = distenv.CoproBuilder(
-    distenv.Dir("assets/core2_firmware"),
+    "#/build/core2_firmware.tgz",
     [],
 )
+distenv.AlwaysBuild(copro_dist)
 distenv.Alias("copro_dist", copro_dist)
 
 firmware_flash = distenv.AddOpenOCDFlashTarget(firmware_env)