add scripts and readme for db use

misc/scripts/mapcreation/readme_database.md

@@ -0,0 +1,51 @@
+Import new tags for noise, green and water feature
+
+
+- A PostgreSQL and a osm2pgsql installation is needed
+  see https://www.postgresql.org/
+  and https://osm2pgsql.org/
+
+- and a jdbc driver
+  see https://jdbc.postgresql.org/download/
+
+
+- prepare database
+
+```
+# postgres createdb --encoding=UTF8  -U postgres osm
+
+# postgres psql  -U postgres osm --command='CREATE EXTENSION postgis;'
+```
+
+- import to database and create
+
+```
+# osm2pgsql  -c -s -d osm -U postgres -W -H localhost -P 5432 -O flex  -S brouter_cfg.lua /path/to/file.pbf
+```
+
+
+- generate new tags inside the database
+
+```
+# psql -d osm -U postgres  -H localhost -P 5432  -f brouter.sql
+```
+
+- prepare generation of pbf
+
+  - when using database and new tagging an other lookups.dat is needed, use lookups_db.dat and rename
+
+  - script needs a jdbc in the classpath
+
+    `... -cp ../postgresql-42.6.0.jar;../brouter_fc.jar ...`
+
+  - script needs a call with jdbc parameter
+
+    define the database parameter
+
+    `JDBC="jdbc:postgresql://localhost/osm?user=postgres&password=xyz&ssl=false"`
+
+    call it with OsmFastCutter as last parameter (behind pbf file)
+
+    `... btools.mapcreator.OsmFastCutter ... ../planet-new.osm.pbf $(JDBC)`
+
+