Updated .gitignore with settings from Zephyr OS project.

Author: skarg

.gitignore

@@ -53,3 +53,38 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
+
+# Zephyr OS
+outdir
+outdir-*
+scripts/basic/fixdep
+scripts/gen_idt/gen_idt
+coverage-report
+doc-coverage.info
+doc/_build
+doc/doxygen
+doc/xml
+doc/html
+doc/boards
+doc/samples
+doc/latex
+doc/themes/zephyr-docs-theme
+sanity-out*
+twister-out*
+bsim_out
+bsim_bt_out
+myresults.xml
+tests/RunResults.xml
+scripts/grub
+doc/reference/kconfig/*.rst
+doc/doc.warnings
+.*project
+.settings
+.envrc
+.vscode
+hide-defaults-note
+venv
+.venv
+.DS_Store
+.clangd
+new.info