add mdbook-pdf support which is able to print pdfs using chromedevtools protocol retaining images

Handbook/GNUmakefile

@@ -226,6 +226,7 @@ install-build-deps:
 	@cargo install mdbook --vers "^0.4" --locked
 	@cargo install xq --locked
 	@cargo install mdbook-alerts --locked
+	@cargo install mdbook-pdf --locked
 
 ################################################################################
 # Make Targets - mdBook

Handbook/book.toml

@@ -84,3 +84,28 @@ heading-split-level = 3
 limit-results = 128
 teaser-word-count = 64
 use-boolean-and = true
+
+[output.pdf]
+browser-binary-path = "/usr/bin/brave-bin"
+trying-times = 1
+timeout = 300
+# https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-printToPDF
+landscape = false
+display-header-footer = true
+print-background = false
+scale = 1.0
+paper-width = 8
+paper-height = 10
+margin-top = 0.5
+margin-bottom = 0.5
+margin-left = 0.5
+margin-right = 0.5
+page-ranges = ""
+ignore-invalid-page-ranges = false
+header-template = "<h3 style='font-size:8px; margin-left: 48%' class='title'></h3>"
+footer-template = "<p style='font-size:10px; margin-left: 48%'><span class='pageNumber'></span> / <span class='totalPages'></span></p>"
+prefer-css-page-size = true
+
+[output.pdf-outline]
+optional = true
+like-wkhtmltopdf = false