v2.0.2-stable

chore: add luaunit for testing lua code
(tag: v2.0.2-stable) fix: get rid of dependency bug in project
chore: add .gitignore
docs: update README.md instructions and info
docs: cleanup unnecessary details from README.md
docs: remove license info from README.md
docs: fix grammatically issue for lua commands
docs: update README.md program instructions
chore: delete file "C++ Triangle Calculator.exe"
(tag: v2.0.0-stable) refactor: rework triangle input