Add devdocs for tools (#24903)

* first push (associated issues: #17951 #761)

* More docs

* Fix spelling

* More docs

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* Update bug-report-tool.md

* Update verification-scripts.md

* Update doc/devdocs/tools/bug-report-tool.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/tools/bug-report-tool.md

* Update doc/devdocs/tools/styles-report-tool.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/tools/build-tools.md

* Update doc/devdocs/tools/clean-up-tool.md

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Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>
Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

doc/devdocs/tools/verification-scripts.md

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+# [Verification Scripts](/tools/Verification%20scripts/)
+
+This folder contains powershell scripts that help verifying the PowerToys installation.
+
+## [Check preview handler registration](/tools/Verification%20scripts/Check%20preview%20handler%20registration.ps1)
+
+This script checks the preview handler registration for the following file types:
+
+* .markdown
+* .mdtext
+* .mdtxt
+* .mdown
+* .mkdn
+* .mdwn
+* .mkd
+* .md
+* .svg
+* .svgz
+* .pdf
+* .gcode
+* .stl
+* .txt
+* .ini
+
+The tool shows the user handler and the machine handler for each file type and displays the App GUID of the corresponding handler.