*: move most of the packages to 'pkg' - #47123

I used the following scripts to update all '.go' files:

#!/bin/bash
#
set -x

# Define an array called pkg_list, each element containing a tuple of source and target directories
pkg_list=(
  "autoid_service pkg/autoid_service"
  "bindinfo pkg/bindinfo"
  "config pkg/config"
  "ddl pkg/ddl"
  "distsql pkg/distsql"
  "disttask pkg/disttask"
  "domain pkg/domain"
  "errno pkg/errno"
  "executor pkg/executor"
  "extension pkg/extension"
  "expression pkg/expression"
  "infoschema pkg/infoschema"
  "keyspace pkg/keyspace"
  "kv pkg/kv"
  "lock pkg/lock"
  "metrics pkg/metrics"
  "owner pkg/owner"
  "meta pkg/meta"
  "parser pkg/parser"
  "privilege pkg/privilege"
  "planner pkg/planner"
  "plugin pkg/plugin"
  "resourcemanager pkg/resourcemanager"
  "server pkg/server"
  "session pkg/session"
  "sessionctx pkg/sessionctx"
  "sessiontxn pkg/sessiontxn"
  "statistics pkg/statistics"
  "structure pkg/structure"
  "store pkg/store"
  "table pkg/table"
  "tablecodec pkg/tablecodec"
  "telemetry pkg/telemetry"
  "testkit pkg/testkit"
  "tidb-binlog pkg/tidb-binlog"
  "util pkg/util"
  "timer pkg/timer"
  "ttl pkg/ttl"
  "types pkg/types"
  "tidb-server cmd/tidb-server"
)

mkdir -p pkg

for entry in "${pkg_list[@]}"; do
  source_dir="${entry%% *}"
  target_dir="${entry#* }"

  if [ -d "$target_dir" ]; then
    echo "Error: The target directory '$target_dir' already exists."
    exit 1
  fi

  git mv "$source_dir" "$target_dir"

  n_source="github.com/pingcap/tidb/$source_dir"
  n_target="github.com/pingcap/tidb/$target_dir"

if [[ $(uname) == "Darwin" ]]; then
  find . -type f -name "*.go" -exec sed -i '' -e "s|$n_source|$n_target|g" {} +
else
  find . -type f -name "*.go" -exec sed -i -e "s|$n_source|$n_target|g" {} +
fi
done

Codecov Report

Merging #47123 (15b3de1) into master (93a834a) will increase coverage by 1.1359%.
The diff coverage is n/a.

@@               Coverage Diff                @@
##             master     #47123        +/-   ##
================================================
+ Coverage   71.7785%   72.9145%   +1.1359%     
================================================
  Files          1353       1418        +65     
  Lines        401276     410541      +9265     
================================================
+ Hits         288030     299344     +11314     
+ Misses        93707      92369      -1338     
+ Partials      19539      18828       -711     

I used the following scripts to update all '.go' files:

#!/bin/bash

# Define an array called pkg_list, each element containing a tuple of source and target directories
pkg_list=(
  "autoid_service pkg/autoid_service"
  "bindinfo pkg/bindinfo"
  "config pkg/config"
  "ddl pkg/ddl"
  "distsql pkg/distsql"
  "disttask pkg/disttask"
  "domain pkg/domain"
  "errno pkg/errno"
  "executor pkg/executor"
  "extension pkg/extension"
  "expression pkg/expression"
  "infoschema pkg/infoschema"
  "keyspace pkg/keyspace"
  "kv pkg/kv"
  "lock pkg/lock"
  "metrics pkg/metrics"
  "owner pkg/owner"
  "meta pkg/meta"
  "parser pkg/parser"
  "privilege pkg/privilege"
  "planner pkg/planner"
  "plugin pkg/plugin"
  "resourcemanager pkg/resourcemanager"
  "server pkg/server"
  "session pkg/session"
  "sessionctx pkg/sessionctx"
  "sessiontxn pkg/sessiontxn"
  "statistics pkg/statistics"
  "structure pkg/structure"
  "store pkg/store"
  "table pkg/table"
  "tablecodec pkg/tablecodec"
  "telemetry pkg/telemetry"
  "testkit pkg/testkit"
  "tidb-binlog pkg/tidb-binlog"
  "timer pkg/timer"
  "ttl pkg/ttl"
  "types pkg/types"
  "tidb-server cmd/tidb-server"
)

mkdir -p pkg

if [[ $(uname) == "Darwin" ]]; then
  sed_command="sed -i ''"
else
  sed_command="sed -i"
fi

for entry in "${pkg_list[@]}"; do
  source_dir="${entry%% *}"
  target_dir="${entry#* }"

  if [ -d "$target_dir" ]; then
    echo "Error: The target directory '$target_dir' already exists."
    exit 1
  fi

  git mv "$source_dir" "$target_dir"

  n_source="github.com/pingcap/tidb/$source_dir"
  n_target="github.com/pingcap/tidb/$target_dir"

  find . -type f -name "*.go" -exec $sed_command -i '' -e "s|$n_source|$n_target|g" {} +
done

Could you also add a shell script attachment in this comment?

/priority p0

@chrysan: Your lgtm message is repeated, so it is ignored.

/approve

just refresh the OWNERS links