gitignore: Added more files to gitignore

Added more files to gitignore, such as files left over from LSPs and
compilation.

Author: justin-t12

.gitignore

@@ -1,5 +1,46 @@
-.pio
-.vscode/.browse.c_cpp.db*
-.vscode/c_cpp_properties.json
-.vscode/launch.json
-.vscode/ipch
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+.pioenvs
+.piolibdeps
+.clang_complete
+.gcc-flags.json
+
+# Custom
+.pio/*
+*.swp
+.vscode/extensions.json
+.vscode/
+.pio/
+hash.h
+
+## ccls/clangd files and compilation files
+.ccls
+.ccls-cache/
+compile_commands.json
+.cache/