feat: initial commit

README.md

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+# Advent-of-Code
+
+## Project overview
+
+### Project structure
+- `data/` :
+    - `example/`: example files go here
+    - `input/`: this directory is gitignored, input files go here
+- `aoc/` : cli implementation
+- `src/` :
+    - `solution/year_<year>/day_<day>.py`: solution files
+- `.env.example`: example dotenv file
+
+### cli
+- `python main.py create [-y <year>] <day>`: prepare solution files for `day`
+- `python main.py download [-y <year>] <day>`: download input file for `day`
+- `python main.py solve [-y <year>] <day>`: run solution against input for `day`
+
+### dotenv
+
+set `AOC_SESSION_TOKEN` to AoC session Cookie
+
+### FAQ
+
+#### How are your commits numbered in ascending order?
+[https://westling.dev/b/extremely-linear-git](https://westling.dev/b/extremely-linear-git)
+