RFR: 8311227: Add .editorconfig [v2]

[Magnus Ihse Bursie]

> Alternative to https://github.com/openjdk/jdk/pull/23693 for implementing JDK-8311227.
> 
> This `.editorconfig` file is a 1-to-1 conversion of the checks done by jcheck into .editorconfig format. I believe that is a better way to introduce an `.editorconfig` file into the existing JDK project.

Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:

  Add .editorconfig enforcing Hotspot style

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24448/files
  - new: https://git.openjdk.org/jdk/pull/24448/files/d9e07e63..a5510fda

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24448&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24448&range=00-01

  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24448.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24448/head:pull/24448

PR: https://git.openjdk.org/jdk/pull/24448