Root directory content refactoring (#1725)

* Root directory refactoring: - move info about Bootup Logo from a sepatate README to main README; - replace separate root scripts build.sh and start_dev.sh by root Makefile; - make Scripts directory and move there: flash_ts100_linux.sh script, ci/ directory, dockerfile, LICENSE_RELEASE, and PULL_REQUEST_TEMPLATE; - reconfigure build & deploy scripts according to changes

* Scripts => scripts

* Scripts -> scripts: re-add missing renamed files

* Directories refactoring: add top-level Makefile, add scripts/deploy.sh script, move github templates from top-level dir to .github, organize files inside Development Resources

* Update scripts/deploy.sh accroding to codestyle syntax shellcheck

* Makefile: add docs-deploy target for mkdocs gh-deploy

* Rename IronOS.yml > Env.yml, update related files

* Docs configs: remove empty characters

* docs/devel: update usage of new script

scripts/IronOS-mkdocs.yml

@@ -0,0 +1,56 @@
+# Project info
+site_name: IronOS
+site_url: https://ralim.github.io/IronOS/
+site_description: "IronOS Open Source Soldering Iron firmware for Miniware and Pinecil"
+
+# repo config
+repo_url: https://github.com/ralim/IronOS/
+
+docs_dir: ../Documentation
+edit_uri: edit/dev/Documentation/
+
+# Theme and config
+theme: 
+    name: readthedocs
+    highlightsjs: true
+    hljs_languages:
+        - yaml
+
+nav:
+  - Home: index.md
+  - Getting Started: GettingStarted.md
+  - Flashing the firmware:
+      - MHP30: Flashing/MHP30.md
+      - Pinecil V1: Flashing/Pinecil V1.md
+      - Pinecil V2: Flashing/Pinecil V2.md
+      - TS80(P): Flashing/TS80(P).md
+      - TS100: Flashing/TS100.md
+  - Operation:
+      - Main Menu: Menu.md
+      - Settings: Settings.md
+      - Debug Menu: DebugMenu.md
+      - Power: Power.md
+      - Temperature: Temperature.md
+  - Startup Logo: Logo.md
+  - Hardware:
+      - Hall Sensor (Pinecil): HallSensor.md
+      - Hardware Notes: Hardware.md
+      - Troubleshooting: Troubleshooting.md
+      - Known Hardware Issues: HardwareIssues.md
+  - Translations: Translation.md
+  - Development: Development.md
+  
+# Plugins
+plugins:
+  - search
+  - autolinks
+  - awesome-pages
+  - git-revision-date
+
+
+# Markdown Extensions
+markdown_extensions:
+  - attr_list
+  - pymdownx.emoji:
+      emoji_index: !!python/name:pymdownx.emoji.twemoji
+      emoji_generator: !!python/name:pymdownx.emoji.to_svg