Add `__repr__` and `__str__` methods to `BedrockGIGeospatialDatabase` and `BedrockGIDatabase`

[JulesBlm]

BedrockGIGeospatialDatabase and BedrockGIGeospatialDatabase are classes with (Geo)DataFrames as values or dicts containing DataFrames. These are printed when printing a BedrockGIGeospatialDatabase which results in the wall of text like below.

We should add __repr__ and __str__ methods that give a more digestable overview of what's inside

BedrockGIGeospatialDatabase(Project=                    project_uid project_source_id horizontal_crs  \
0     GE/2008/03.6-fRwYxcZEW84H      GE/2008/03.6      EPSG:2326   
1    GE/2008/03.25-xpjn3U+k2GhM     GE/2008/03.25      EPSG:2326   
2    GE/2009/03.38-FdBIOBn/7wun     GE/2009/03.38      EPSG:2326   
3   GE/2010/02.50A-5dOvP7M6/TZz    GE/2010/02.50A      EPSG:2326   
4    GE/2010/02.50-00pVnZY2/MCR     GE/2010/02.50      EPSG:2326   
..                          ...               ...            ...   
12      GE/99/08.7-zkzp92UW2YtM        GE/99/08.7      EPSG:2326   
13  GE/2001/29.10B-21QXj8/XpRDo    GE/2001/29.10B      EPSG:2326   
14   GE/2005/03.25-vJloJbu1R9O+     GE/2005/03.25      EPSG:2326   
15   GE/2005/03.57-/lsCZ1XI5byy     GE/2005/03.57      EPSG:2326   
16    GE/2007/13.4-z2uPZoQSWE6q      GE/2007/13.4      EPSG:2326   

                                   horizontal_crs_wkt vertical_crs  \
0   PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
1   PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
2   PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
3   PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
4   PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
..                                                ...          ...   
12  PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
13  PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
14  PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
15  PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   
16  PROJCRS["Hong Kong 1980 Grid System",BASEGEOGC...    EPSG:5738   

                                     vertical_crs_wkt         PROJ_ID  \
0   VERTCRS["HKPD height",VDATUM["Hong Kong Princi...    GE/2008/03.6   
1   VERTCRS["HKPD height",VDATUM["Hong Kong Princi...   GE/2008/03.25   
2   VERTCRS["HKPD height",VDATUM["Hong Kong Princi...   GE/2009/03.38   
3   VERTCRS["HKPD height",VDATUM["Hong Kong Princi...  GE/2010/02.50A   
4   VERTCRS["HKPD height",VDATUM["Hong Kong Princi...   GE/2010/02.50   
..                                                ...             ...   
12  VERTCRS["HKPD height",VDATUM["Hong Kong Princi...      GE/99/08.7   
13  VERTCRS["HKPD height",VDATUM["Hong Kong Princi...  GE/2001/29.10B   
14  VERTCRS["HKPD height",VDATUM["Hong Kong Princi...   GE/2005/03.25   
15  VERTCRS["HKPD height",VDATUM["Hong Kong Princi...   GE/2005/03.57   
16  VERTCRS["HKPD height",VDATUM["Hong Kong Princi...    GE/2007/13.4   

                                            PROJ_NAME  \
0   Agreement No. CE 58/2006 (HY), Central Kowloon...   
1   Agreement No. CE 30/2008, Kai Tak Development ...   
2   Ground Investigation - Urban (Term Contract), ...   
3   Agreement No. CE 43/2010 (HY) Central Kowloon ...   
4   Agreement No. CE 43/2010 (HY) Central Kowloon ...   
..                                                ...   
12                             Agreement No. CE 32/99   
13  SOUTH EAST KOWLOON DEVELOPMENT KAI TAK APPROAC...   
14       Ground Investigation - Urban (Term Contract)   
15       Ground Investigation - Urban (Term Contract)   
16  Agreement No. CE 35/2006(CE) - Kai Tak Develop...   

                                             PROJ_LOC  \
0   Between Ma Tau Kok Public Pier and the former ...   
1                      Marine area at Kai Tak Airport   
2                                                <NA>   
3                                                <NA>   
4                                                <NA>   
..                                                ...   
12  Comprehensive Feasibility Study for the Revise...   
13                                            Kai Tak   
14  Agreement No. KDO 02/2005 Assessment of Possib...   
15  Agreement No. KDO 01/2006 Site Investigation a...   
16                              Kai Tak, Kowloon City   

                                            PROJ_CLNT  \
0        Civil Engineering and Development Department   
1        Civil Engineering and Development Department   
2   Civil Engineering and Development Department, ...   
3   HKSAR - Civil Engineering & Development Depart...   
4   HKSAR - Civil Engineering & Development Depart...   
..                                                ...   
12                                                CED   
13                    Geotechnical Engineering Office   
14         GEO - Geotechnical Projects Division (GI1)   
15         GEO - Geotechnical Projects Division (GI1)   
16       Civil Engineering and Development Department   

                              PROJ_CONT  \
0      Fugro Geotechnical Services Ltd.   
1      Fugro Geotechnical Services Ltd.   
2      DrilTech Ground Engineering Ltd.   
3           GAMMON CONSTRUCTION LIMITED   
4           GAMMON CONSTRUCTION LIMITED   
..                                  ...   
12              Gammon Construction Ltd   
13       Bachy Soletanche Group Limited   
14  Fugro Geotechnical Services Limited   
15  Fugro Geotechnical Services Limited   
16     Fugro Geotechnical Services Ltd.