chore: add common configuration for the project

Set `editorconfig` pattern and files/paths to be ignored by `git` and
`docker`.

Finally, define runtimes needed by the project using `mise`.

.dockerignore

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+**/node_modules
+**/.next

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.{ts,tsx,js,jsx,json}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+indent_size = 2
+
+[{Dockerfile,docker-compose.yml,docker-compose.*.yml,compose.yml,compose.*.yml}]
+indent_style = space
+indent_size = 2
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+[*.sh]
+end_of_line = lf
+indent_style = space
+indent_size = 2
+
+[package.json]
+indent_style = space
+indent_size = 2
+
+[*.{xml,config,conf}]
+indent_style = space
+indent_size = 2
+
+[Makefile]
+indent_style = tab

.gitignore

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+**/node_modules
+**/.next

mise.toml

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+[tools]
+node = "18.20.7"
+yarn = "1.22.22"