Add .gitattributes file to ignore merge conflicts #53

Job	Run time
Makefile / Assert PR branch is ahead	2s
CI matrix / Assert PR branch is ahead	2s
CI matrix / Lint codebase (go-ci-oldstable, false)	29s
CI matrix / Lint codebase (go-ci-stable, false)	36s
CI matrix / Lint codebase (go-ci-unstable, true)	31s
CI matrix / Build codebase (go-ci-oldstable, false)	22s
CI matrix / Build codebase (go-ci-stable, false)	25s
CI matrix / Build codebase (go-ci-unstable, true)	26s
CI matrix / Run tests (go-ci-oldstable, false)	26s
CI matrix / Run tests (go-ci-stable, false)	44s
CI matrix / Run tests (go-ci-unstable, true)	24s
Makefile / Build codebase using Makefile all recipe	0s
Makefile / Build codebase using Makefile quick recipe	30s
Makefile / Lint codebase using Makefile	53s
CI matrix / Optional Linting / Assert PR branch is ahead	3s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-oldstable, true)	22s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-stable, true)	31s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-unstable, true)	28s
	7m 14s

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